{"id":"https://openalex.org/W1528813880","doi":"https://doi.org/10.1007/3-540-08353-7_125","title":"Classification of the context-free languages","display_name":"Classification of the context-free languages","publication_year":1977,"publication_date":"1977-01-01","ids":{"openalex":"https://openalex.org/W1528813880","doi":"https://doi.org/10.1007/3-540-08353-7_125","mag":"1528813880"},"language":"en","primary_location":{"id":"doi:10.1007/3-540-08353-7_125","is_oa":false,"landing_page_url":"https://doi.org/10.1007/3-540-08353-7_125","pdf_url":null,"source":{"id":"https://openalex.org/S106296714","display_name":"Lecture notes in computer science","issn_l":"0302-9743","issn":["0302-9743","1611-3349"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319900","host_organization_name":"Springer Science+Business Media","host_organization_lineage":["https://openalex.org/P4310319900","https://openalex.org/P4310319965"],"host_organization_lineage_names":["Springer Science+Business Media","Springer Nature"],"type":"book series"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Lecture Notes in Computer Science","raw_type":"book-chapter"},"type":"book-chapter","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/A5071797806","display_name":"Luc Boasson","orcid":null},"institutions":[{"id":"https://openalex.org/I1294671590","display_name":"Centre National de la Recherche Scientifique","ror":"https://ror.org/02feahw73","country_code":"FR","type":"government","lineage":["https://openalex.org/I1294671590"]},{"id":"https://openalex.org/I4210109170","display_name":"Laboratoire de Physique Th\u00e9orique","ror":"https://ror.org/01w0hda30","country_code":"FR","type":"facility","lineage":["https://openalex.org/I1294671590","https://openalex.org/I1294671590","https://openalex.org/I1294671590","https://openalex.org/I134560555","https://openalex.org/I196454796","https://openalex.org/I4210098836","https://openalex.org/I4210109170","https://openalex.org/I4388446414","https://openalex.org/I4405258862","https://openalex.org/I4405258862"]},{"id":"https://openalex.org/I4647051","display_name":"Universit\u00e9 de Picardie Jules Verne","ror":"https://ror.org/01gyxrk03","country_code":"FR","type":"education","lineage":["https://openalex.org/I4647051"]}],"countries":["FR"],"is_corresponding":true,"raw_author_name":"L. Boasson","raw_affiliation_strings":["Laboratoire associ\u00e9 du CNRS \u201cInformatique th\u00e9orique et programmation\u201d, France","U.E.R. de Math\u00e9matiques Universit\u00e9 de Picardie, Amiens \u2014 F, France","Laboratoire associ\u00e9 du CNRS \u201cInformatique th\u00e9orique et programmation\u201d","U.E.R. de Math\u00e9matiques Universit\u00e9 de Picardie"],"affiliations":[{"raw_affiliation_string":"Laboratoire associ\u00e9 du CNRS \u201cInformatique th\u00e9orique et programmation\u201d, France","institution_ids":["https://openalex.org/I4210109170","https://openalex.org/I1294671590"]},{"raw_affiliation_string":"U.E.R. de Math\u00e9matiques Universit\u00e9 de Picardie, Amiens \u2014 F, France","institution_ids":["https://openalex.org/I4647051"]},{"raw_affiliation_string":"Laboratoire associ\u00e9 du CNRS \u201cInformatique th\u00e9orique et programmation\u201d","institution_ids":["https://openalex.org/I1294671590"]},{"raw_affiliation_string":"U.E.R. de Math\u00e9matiques Universit\u00e9 de Picardie","institution_ids":["https://openalex.org/I4647051"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":["https://openalex.org/A5071797806"],"corresponding_institution_ids":["https://openalex.org/I1294671590","https://openalex.org/I4210109170","https://openalex.org/I4647051"],"apc_list":{"value":5000,"currency":"EUR","value_usd":5392},"apc_paid":null,"fwci":1.956,"has_fulltext":false,"cited_by_count":3,"citation_normalized_percentile":{"value":0.84106892,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":null,"first_page":"34","last_page":"43"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11567","display_name":"semigroups and automata theory","score":0.9998999834060669,"subfield":{"id":"https://openalex.org/subfields/1703","display_name":"Computational Theory and Mathematics"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T11567","display_name":"semigroups and automata theory","score":0.9998999834060669,"subfield":{"id":"https://openalex.org/subfields/1703","display_name":"Computational Theory and Mathematics"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11269","display_name":"Algorithms and Data Compression","score":0.9988999962806702,"subfield":{"id":"https://openalex.org/subfields/1702","display_name":"Artificial Intelligence"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T12029","display_name":"DNA and Biological Computing","score":0.9973999857902527,"subfield":{"id":"https://openalex.org/subfields/1312","display_name":"Molecular Biology"},"field":{"id":"https://openalex.org/fields/13","display_name":"Biochemistry, Genetics and Molecular Biology"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.8680703639984131},{"id":"https://openalex.org/keywords/programming-language","display_name":"Programming language","score":0.4927966892719269},{"id":"https://openalex.org/keywords/context","display_name":"Context (archaeology)","score":0.4743969440460205},{"id":"https://openalex.org/keywords/natural-language-processing","display_name":"Natural language processing","score":0.3860977590084076},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.3644574284553528},{"id":"https://openalex.org/keywords/history","display_name":"History","score":0.08653140068054199},{"id":"https://openalex.org/keywords/archaeology","display_name":"Archaeology","score":0.04655170440673828}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.8680703639984131},{"id":"https://openalex.org/C199360897","wikidata":"https://www.wikidata.org/wiki/Q9143","display_name":"Programming language","level":1,"score":0.4927966892719269},{"id":"https://openalex.org/C2779343474","wikidata":"https://www.wikidata.org/wiki/Q3109175","display_name":"Context (archaeology)","level":2,"score":0.4743969440460205},{"id":"https://openalex.org/C204321447","wikidata":"https://www.wikidata.org/wiki/Q30642","display_name":"Natural language processing","level":1,"score":0.3860977590084076},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.3644574284553528},{"id":"https://openalex.org/C95457728","wikidata":"https://www.wikidata.org/wiki/Q309","display_name":"History","level":0,"score":0.08653140068054199},{"id":"https://openalex.org/C166957645","wikidata":"https://www.wikidata.org/wiki/Q23498","display_name":"Archaeology","level":1,"score":0.04655170440673828}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1007/3-540-08353-7_125","is_oa":false,"landing_page_url":"https://doi.org/10.1007/3-540-08353-7_125","pdf_url":null,"source":{"id":"https://openalex.org/S106296714","display_name":"Lecture notes in computer science","issn_l":"0302-9743","issn":["0302-9743","1611-3349"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319900","host_organization_name":"Springer Science+Business Media","host_organization_lineage":["https://openalex.org/P4310319900","https://openalex.org/P4310319965"],"host_organization_lineage_names":["Springer Science+Business Media","Springer Nature"],"type":"book series"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Lecture Notes in Computer Science","raw_type":"book-chapter"}],"best_oa_location":null,"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/4","display_name":"Quality Education","score":0.41999998688697815}],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":31,"referenced_works":["https://openalex.org/W84293611","https://openalex.org/W94525995","https://openalex.org/W135057427","https://openalex.org/W1584945613","https://openalex.org/W1890888469","https://openalex.org/W1964838474","https://openalex.org/W1965306495","https://openalex.org/W1965673983","https://openalex.org/W1983845295","https://openalex.org/W1988072216","https://openalex.org/W1989146600","https://openalex.org/W1992222837","https://openalex.org/W1996878052","https://openalex.org/W2002276227","https://openalex.org/W2007835340","https://openalex.org/W2010158978","https://openalex.org/W2018555128","https://openalex.org/W2020570874","https://openalex.org/W2049692841","https://openalex.org/W2052674111","https://openalex.org/W2058929902","https://openalex.org/W2059501879","https://openalex.org/W2060898820","https://openalex.org/W2065290848","https://openalex.org/W2076423537","https://openalex.org/W2092008211","https://openalex.org/W2094441483","https://openalex.org/W2148224873","https://openalex.org/W2219387141","https://openalex.org/W2912057089","https://openalex.org/W3185903058"],"related_works":["https://openalex.org/W2899084033","https://openalex.org/W2748952813","https://openalex.org/W2390279801","https://openalex.org/W2358668433","https://openalex.org/W2376932109","https://openalex.org/W2382290278","https://openalex.org/W2350741829","https://openalex.org/W2130043461","https://openalex.org/W2530322880","https://openalex.org/W3192589309"],"abstract_inverted_index":null,"counts_by_year":[],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}