{"id":"https://openalex.org/C138632511","wikidata":"https://www.wikidata.org/wiki/Q2478109","display_name":"Nonholonomic system","level":4,"description":"type of optimization problem","works_count":11649,"cited_by_count":176745,"summary_stats":null,"ids":{"openalex":"https://openalex.org/C138632511","wikidata":"https://www.wikidata.org/wiki/Q2478109","mag":null,"wikipedia":"https://en.wikipedia.org/wiki/nonholonomic_system","umls_aui":null,"umls_cui":null},"image_url":null,"image_thumbnail_url":null,"international":{},"ancestors":null,"related_concepts":null,"counts_by_year":null,"works_api_url":"https://api.openalex.org/works?filter=concepts.id:138632511","updated_date":"2026-08-22T04:02:44","created_date":"2016-06-24T00:00:00"}
