{"id":"https://openalex.org/W2029989434","doi":"https://doi.org/10.1007/bf02017199","title":"Productivity differences fields of learning, and Lotka's law","display_name":"Productivity differences fields of learning, and Lotka's law","publication_year":1989,"publication_date":"1989-03-01","ids":{"openalex":"https://openalex.org/W2029989434","doi":"https://doi.org/10.1007/bf02017199","mag":"2029989434"},"language":"en","primary_location":{"id":"doi:10.1007/bf02017199","is_oa":false,"landing_page_url":"https://doi.org/10.1007/bf02017199","pdf_url":null,"source":{"id":"https://openalex.org/S148561398","display_name":"Scientometrics","issn_l":"0138-9130","issn":["0138-9130","1588-2861"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310320108","host_organization_name":"Springer Nature (Netherlands)","host_organization_lineage":["https://openalex.org/P4310320108","https://openalex.org/P4310319965"],"host_organization_lineage_names":["Springer Nature (Netherlands)","Springer Nature"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Scientometrics","raw_type":"journal-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5025216552","display_name":"Svein Kyvik","orcid":null},"institutions":[{"id":"https://openalex.org/I1290503407","display_name":"The Research Council of Norway","ror":"https://ror.org/00epmv149","country_code":"NO","type":"funder","lineage":["https://openalex.org/I1290503407","https://openalex.org/I4210131556","https://openalex.org/I4210149801"]}],"countries":["NO"],"is_corresponding":true,"raw_author_name":"S. Kyvik","raw_affiliation_strings":["Institute for Studies in Research and Higher Education, The Norwegian Research Council for Science and the Humanities, Munthesgt. 29, 0260, Oslo 2, (Norway)","Institute for Studies in Research and Higher Education, The Norwegian Research Council for Science and the Humanities, Oslo 2, (Norway)"],"affiliations":[{"raw_affiliation_string":"Institute for Studies in Research and Higher Education, The Norwegian Research Council for Science and the Humanities, Munthesgt. 29, 0260, Oslo 2, (Norway)","institution_ids":["https://openalex.org/I1290503407"]},{"raw_affiliation_string":"Institute for Studies in Research and Higher Education, The Norwegian Research Council for Science and the Humanities, Oslo 2, (Norway)","institution_ids":["https://openalex.org/I1290503407"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":["https://openalex.org/A5025216552"],"corresponding_institution_ids":["https://openalex.org/I1290503407"],"apc_list":{"value":2290,"currency":"EUR","value_usd":2890},"apc_paid":null,"fwci":2.9053,"has_fulltext":false,"cited_by_count":63,"citation_normalized_percentile":{"value":0.91955887,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":89,"max":99},"biblio":{"volume":"15","issue":"3-4","first_page":"205","last_page":"214"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10102","display_name":"scientometrics and bibliometrics research","score":0.9991000294685364,"subfield":{"id":"https://openalex.org/subfields/1804","display_name":"Statistics, Probability and Uncertainty"},"field":{"id":"https://openalex.org/fields/18","display_name":"Decision Sciences"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},"topics":[{"id":"https://openalex.org/T10102","display_name":"scientometrics and bibliometrics research","score":0.9991000294685364,"subfield":{"id":"https://openalex.org/subfields/1804","display_name":"Statistics, Probability and Uncertainty"},"field":{"id":"https://openalex.org/fields/18","display_name":"Decision Sciences"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/norwegian","display_name":"Norwegian","score":0.8280845284461975},{"id":"https://openalex.org/keywords/productivity","display_name":"Productivity","score":0.7750093936920166},{"id":"https://openalex.org/keywords/publishing","display_name":"Publishing","score":0.5963626503944397},{"id":"https://openalex.org/keywords/social-science","display_name":"Social science","score":0.5320008397102356},{"id":"https://openalex.org/keywords/relation","display_name":"Relation (database)","score":0.48664936423301697},{"id":"https://openalex.org/keywords/sociology","display_name":"Sociology","score":0.4546234905719757},{"id":"https://openalex.org/keywords/inequality","display_name":"Inequality","score":0.422453910112381},{"id":"https://openalex.org/keywords/bibliometrics","display_name":"Bibliometrics","score":0.4108017683029175},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.27077725529670715},{"id":"https://openalex.org/keywords/political-science","display_name":"Political science","score":0.24830126762390137},{"id":"https://openalex.org/keywords/economics","display_name":"Economics","score":0.23893827199935913},{"id":"https://openalex.org/keywords/library-science","display_name":"Library science","score":0.22231540083885193},{"id":"https://openalex.org/keywords/law","display_name":"Law","score":0.21099898219108582},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.20733770728111267},{"id":"https://openalex.org/keywords/philosophy","display_name":"Philosophy","score":0.15807077288627625},{"id":"https://openalex.org/keywords/economic-growth","display_name":"Economic growth","score":0.09118396043777466},{"id":"https://openalex.org/keywords/linguistics","display_name":"Linguistics","score":0.08600535988807678}],"concepts":[{"id":"https://openalex.org/C63428231","wikidata":"https://www.wikidata.org/wiki/Q9043","display_name":"Norwegian","level":2,"score":0.8280845284461975},{"id":"https://openalex.org/C204983608","wikidata":"https://www.wikidata.org/wiki/Q2111958","display_name":"Productivity","level":2,"score":0.7750093936920166},{"id":"https://openalex.org/C151719136","wikidata":"https://www.wikidata.org/wiki/Q3972943","display_name":"Publishing","level":2,"score":0.5963626503944397},{"id":"https://openalex.org/C36289849","wikidata":"https://www.wikidata.org/wiki/Q34749","display_name":"Social science","level":1,"score":0.5320008397102356},{"id":"https://openalex.org/C25343380","wikidata":"https://www.wikidata.org/wiki/Q277521","display_name":"Relation (database)","level":2,"score":0.48664936423301697},{"id":"https://openalex.org/C144024400","wikidata":"https://www.wikidata.org/wiki/Q21201","display_name":"Sociology","level":0,"score":0.4546234905719757},{"id":"https://openalex.org/C45555294","wikidata":"https://www.wikidata.org/wiki/Q28113351","display_name":"Inequality","level":2,"score":0.422453910112381},{"id":"https://openalex.org/C178315738","wikidata":"https://www.wikidata.org/wiki/Q603441","display_name":"Bibliometrics","level":2,"score":0.4108017683029175},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.27077725529670715},{"id":"https://openalex.org/C17744445","wikidata":"https://www.wikidata.org/wiki/Q36442","display_name":"Political science","level":0,"score":0.24830126762390137},{"id":"https://openalex.org/C162324750","wikidata":"https://www.wikidata.org/wiki/Q8134","display_name":"Economics","level":0,"score":0.23893827199935913},{"id":"https://openalex.org/C161191863","wikidata":"https://www.wikidata.org/wiki/Q199655","display_name":"Library science","level":1,"score":0.22231540083885193},{"id":"https://openalex.org/C199539241","wikidata":"https://www.wikidata.org/wiki/Q7748","display_name":"Law","level":1,"score":0.21099898219108582},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.20733770728111267},{"id":"https://openalex.org/C138885662","wikidata":"https://www.wikidata.org/wiki/Q5891","display_name":"Philosophy","level":0,"score":0.15807077288627625},{"id":"https://openalex.org/C50522688","wikidata":"https://www.wikidata.org/wiki/Q189833","display_name":"Economic growth","level":1,"score":0.09118396043777466},{"id":"https://openalex.org/C41895202","wikidata":"https://www.wikidata.org/wiki/Q8162","display_name":"Linguistics","level":1,"score":0.08600535988807678},{"id":"https://openalex.org/C134306372","wikidata":"https://www.wikidata.org/wiki/Q7754","display_name":"Mathematical analysis","level":1,"score":0.0},{"id":"https://openalex.org/C77088390","wikidata":"https://www.wikidata.org/wiki/Q8513","display_name":"Database","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1007/bf02017199","is_oa":false,"landing_page_url":"https://doi.org/10.1007/bf02017199","pdf_url":null,"source":{"id":"https://openalex.org/S148561398","display_name":"Scientometrics","issn_l":"0138-9130","issn":["0138-9130","1588-2861"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310320108","host_organization_name":"Springer Nature (Netherlands)","host_organization_lineage":["https://openalex.org/P4310320108","https://openalex.org/P4310319965"],"host_organization_lineage_names":["Springer Nature (Netherlands)","Springer Nature"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Scientometrics","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[{"score":0.6000000238418579,"display_name":"Decent work and economic growth","id":"https://metadata.un.org/sdg/8"}],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":34,"referenced_works":["https://openalex.org/W64223453","https://openalex.org/W608104101","https://openalex.org/W1546171873","https://openalex.org/W1971511272","https://openalex.org/W1979233281","https://openalex.org/W1982946062","https://openalex.org/W1996888950","https://openalex.org/W2001072052","https://openalex.org/W2019020697","https://openalex.org/W2030552375","https://openalex.org/W2038049849","https://openalex.org/W2051143065","https://openalex.org/W2051743327","https://openalex.org/W2054613760","https://openalex.org/W2056706006","https://openalex.org/W2060566459","https://openalex.org/W2067799650","https://openalex.org/W2072735417","https://openalex.org/W2084977988","https://openalex.org/W2108584103","https://openalex.org/W2111976725","https://openalex.org/W2117586052","https://openalex.org/W2135223039","https://openalex.org/W2162912940","https://openalex.org/W2167651468","https://openalex.org/W2171840051","https://openalex.org/W2312979272","https://openalex.org/W2324440447","https://openalex.org/W2335461596","https://openalex.org/W2463095032","https://openalex.org/W4230420631","https://openalex.org/W4254878679","https://openalex.org/W4285719527","https://openalex.org/W4300497772"],"related_works":["https://openalex.org/W2061564463","https://openalex.org/W2127095710","https://openalex.org/W2512753411","https://openalex.org/W2060399824","https://openalex.org/W2028240842","https://openalex.org/W1972562838","https://openalex.org/W2325410321","https://openalex.org/W3101822383","https://openalex.org/W1536194326","https://openalex.org/W3179137071"],"abstract_inverted_index":null,"counts_by_year":[{"year":2026,"cited_by_count":1},{"year":2025,"cited_by_count":1},{"year":2024,"cited_by_count":1},{"year":2023,"cited_by_count":2},{"year":2022,"cited_by_count":2},{"year":2021,"cited_by_count":1},{"year":2020,"cited_by_count":3},{"year":2019,"cited_by_count":3},{"year":2018,"cited_by_count":1},{"year":2017,"cited_by_count":1},{"year":2016,"cited_by_count":3},{"year":2015,"cited_by_count":4},{"year":2014,"cited_by_count":1}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}
