{"id":"https://openalex.org/A5111795478","orcid":null,"observed_orcids":[],"display_name":"Karl J. Leyser","raw_author_names":["K. J. Leyser","KARL LEYSER","KARL LEYSER (\u2020)","Karl J Leyser","Karl J. Leyser","Karl Leyser","Leyser, Karl","Leyser, Karl 1920-1992"],"full_name":"Karl J. Leyser","works_count":44,"cited_by_count":648,"summary_stats":{"2yr_mean_citedness":0.0,"h_index":10,"i10_index":10},"ids":{"openalex":"https://openalex.org/A5111795478","orcid":null,"observed_orcids":[]},"affiliations":[{"institution":{"id":"https://openalex.org/I2800082484","ror":"https://ror.org/00rwtwt20","display_name":"Northeast Catholic College","country_code":"US","type":"education","lineage":["https://openalex.org/I2800082484"]},"years":[1965,1954]},{"institution":{"id":"https://openalex.org/I40120149","ror":"https://ror.org/052gg0110","display_name":"University of Oxford","country_code":"GB","type":"education","lineage":["https://openalex.org/I40120149"]},"years":[1989,1988,1987,1986,1985,1982,1981,1965,1954]}],"last_known_institutions":null,"topics":[{"id":"https://openalex.org/T10595","display_name":"Medieval Literature and History","count":39,"subfield":{"id":"https://openalex.org/subfields/1205","display_name":"Classics"},"field":{"id":"https://openalex.org/fields/12","display_name":"Arts and Humanities"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},{"id":"https://openalex.org/T14388","display_name":"Medieval European History and Architecture","count":22,"subfield":{"id":"https://openalex.org/subfields/1204","display_name":"Archeology"},"field":{"id":"https://openalex.org/fields/12","display_name":"Arts and Humanities"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},{"id":"https://openalex.org/T14451","display_name":"Historical and Religious Studies of Rome","count":12,"subfield":{"id":"https://openalex.org/subfields/1202","display_name":"History"},"field":{"id":"https://openalex.org/fields/12","display_name":"Arts and Humanities"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},{"id":"https://openalex.org/T13739","display_name":"Medieval and Early Modern Justice","count":11,"subfield":{"id":"https://openalex.org/subfields/3320","display_name":"Political Science and International Relations"},"field":{"id":"https://openalex.org/fields/33","display_name":"Social Sciences"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},{"id":"https://openalex.org/T12999","display_name":"Medieval History and Crusades","count":7,"subfield":{"id":"https://openalex.org/subfields/1202","display_name":"History"},"field":{"id":"https://openalex.org/fields/12","display_name":"Arts and Humanities"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}}],"topic_share":[{"id":"https://openalex.org/T14388","display_name":"Medieval European History and Architecture","value":5.55e-05,"subfield":{"id":"https://openalex.org/subfields/1204","display_name":"Archeology"},"field":{"id":"https://openalex.org/fields/12","display_name":"Arts and Humanities"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},{"id":"https://openalex.org/T14451","display_name":"Historical and Religious Studies of Rome","value":3.71e-05,"subfield":{"id":"https://openalex.org/subfields/1202","display_name":"History"},"field":{"id":"https://openalex.org/fields/12","display_name":"Arts and Humanities"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},{"id":"https://openalex.org/T13593","display_name":"Historical and Archaeological Studies","value":3.49e-05,"subfield":{"id":"https://openalex.org/subfields/1202","display_name":"History"},"field":{"id":"https://openalex.org/fields/12","display_name":"Arts and Humanities"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},{"id":"https://openalex.org/T12999","display_name":"Medieval History and Crusades","value":3.35e-05,"subfield":{"id":"https://openalex.org/subfields/1202","display_name":"History"},"field":{"id":"https://openalex.org/fields/12","display_name":"Arts and Humanities"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},{"id":"https://openalex.org/T10595","display_name":"Medieval Literature and History","value":2.97e-05,"subfield":{"id":"https://openalex.org/subfields/1205","display_name":"Classics"},"field":{"id":"https://openalex.org/fields/12","display_name":"Arts and Humanities"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}}],"x_concepts":[{"id":"15708023","wikidata":"https://www.wikidata.org/wiki/Q80083","display_name":"Humanities","score":0.7764753103256226},{"id":"195244886","wikidata":"https://www.wikidata.org/wiki/Q41493","display_name":"Ancient history","score":0.7483447790145874},{"id":"95457728","wikidata":"https://www.wikidata.org/wiki/Q309","display_name":"History","score":0.6276999711990356},{"id":"142362112","wikidata":"https://www.wikidata.org/wiki/Q735","display_name":"Art","score":0.5090157985687256},{"id":"17744445","wikidata":"https://www.wikidata.org/wiki/Q36442","display_name":"Political science","score":0.46021994948387146}],"counts_by_year":[{"year":1954,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1965,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1979,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1981,"works_count":6,"oa_works_count":0,"cited_by_count":0},{"year":1982,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":1983,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":1985,"works_count":3,"oa_works_count":0,"cited_by_count":0},{"year":1986,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":1987,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":1988,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":1989,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1990,"works_count":4,"oa_works_count":0,"cited_by_count":0},{"year":1992,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":1993,"works_count":3,"oa_works_count":0,"cited_by_count":0},{"year":1994,"works_count":3,"oa_works_count":0,"cited_by_count":0},{"year":1996,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":2003,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":2012,"works_count":0,"oa_works_count":0,"cited_by_count":4},{"year":2013,"works_count":0,"oa_works_count":0,"cited_by_count":15},{"year":2014,"works_count":2,"oa_works_count":2,"cited_by_count":8},{"year":2015,"works_count":0,"oa_works_count":0,"cited_by_count":18},{"year":2016,"works_count":0,"oa_works_count":0,"cited_by_count":5},{"year":2017,"works_count":3,"oa_works_count":0,"cited_by_count":14},{"year":2018,"works_count":1,"oa_works_count":1,"cited_by_count":23},{"year":2019,"works_count":0,"oa_works_count":0,"cited_by_count":94},{"year":2020,"works_count":0,"oa_works_count":0,"cited_by_count":14},{"year":2021,"works_count":0,"oa_works_count":0,"cited_by_count":17},{"year":2022,"works_count":0,"oa_works_count":0,"cited_by_count":4},{"year":2023,"works_count":0,"oa_works_count":0,"cited_by_count":2},{"year":2024,"works_count":0,"oa_works_count":0,"cited_by_count":21},{"year":2025,"works_count":0,"oa_works_count":0,"cited_by_count":2},{"year":2026,"works_count":0,"oa_works_count":0,"cited_by_count":1}],"display_name_alternatives":["K. J. Leyser","KARL LEYSER","KARL LEYSER (\u2020)","Karl J Leyser","Karl J. Leyser","Karl Leyser","Leyser, Karl","Leyser, Karl 1920-1992"],"block_key":"k leyser","works_api_url":"https://api.openalex.org/works?filter=author.id:A5111795478","updated_date":"2026-10-27T12:30:23","created_date":"2016-06-24T00:00:00"}