Get quick answers to your questions about the article from our AI researcher chatbot
{'id': 'https://openalex.org/W399625183', 'doi': None, 'title': 'Linear systems of ordinary differential equations', 'display_name': 'Linear systems of ordinary differential equations', 'publication_year': 1966, 'publication_date': '1966-01-01', 'ids': {'openalex': 'https://openalex.org/W399625183', 'mag': '399625183'}, 'language': 'en', 'primary_location': {'is_oa': False, 'landing_page_url': 'http://ci.nii.ac.jp/ncid/BA05421440', 'pdf_url': None, 'source': None, 'license': None, 'license_id': None, 'version': None, 'is_accepted': False, 'is_published': False}, 'type': 'book', 'type_crossref': 'book', 'indexed_in': [], 'open_access': {'is_oa': False, 'oa_status': 'closed', 'oa_url': None, 'any_repository_has_fulltext': False}, 'authorships': [{'author_position': 'first', 'author': {'id': 'https://openalex.org/A5003071464', 'display_name': 'N. P. Erugin', 'orcid': None}, 'institutions': [], 'countries': [], 'is_corresponding': True, 'raw_author_name': 'N. P. Erugin', 'raw_affiliation_strings': [], 'affiliations': []}], 'institution_assertions': [], 'countries_distinct_count': 0, 'institutions_distinct_count': 0, 'corresponding_author_ids': ['https://openalex.org/A5003071464'], 'corresponding_institution_ids': [], 'apc_list': None, 'apc_paid': None, 'fwci': 3.231, 'has_fulltext': False, 'cited_by_count': 69, 'citation_normalized_percentile': {'value': 0.727273, 'is_in_top_1_percent': False, 'is_in_top_10_percent': False}, 'cited_by_percentile_year': {'min': 96, 'max': 97}, 'biblio': {'volume': None, 'issue': None, 'first_page': None, 'last_page': None}, 'is_retracted': False, 'is_paratext': False, 'primary_topic': {'id': 'https://openalex.org/T11416', 'display_name': 'Numerical Integration Methods for Differential Equations', 'score': 0.7782, 'subfield': {'id': 'https://openalex.org/subfields/2612', 'display_name': 'Numerical Analysis'}, 'field': {'id': 'https://openalex.org/fields/26', 'display_name': 'Mathematics'}, 'domain': {'id': 'https://openalex.org/domains/3', 'display_name': 'Physical Sciences'}}, 'topics': [{'id': 'https://openalex.org/T11416', 'display_name': 'Numerical Integration Methods for Differential Equations', 'score': 0.7782, 'subfield': {'id': 'https://openalex.org/subfields/2612', 'display_name': 'Numerical Analysis'}, 'field': {'id': 'https://openalex.org/fields/26', 'display_name': 'Mathematics'}, 'domain': {'id': 'https://openalex.org/domains/3', 'display_name': 'Physical Sciences'}}], 'keywords': [{'id': 'https://openalex.org/keywords/differential-equations', 'display_name': 'Differential Equations', 'score': 0.677846}, {'id': 'https://openalex.org/keywords/hamiltonian-systems', 'display_name': 'Hamiltonian Systems', 'score': 0.600461}, {'id': 'https://openalex.org/keywords/variational-integrators', 'display_name': 'Variational Integrators', 'score': 0.588334}, {'id': 'https://openalex.org/keywords/exponential-integrators', 'display_name': 'Exponential Integrators', 'score': 0.573895}, {'id': 'https://openalex.org/keywords/time-stepping-schemes', 'display_name': 'Time-Stepping Schemes', 'score': 0.537214}], 'concepts': [{'id': 'https://openalex.org/C51544822', 'wikidata': 'https://www.wikidata.org/wiki/Q465274', 'display_name': 'Ordinary differential equation', 'level': 3, 'score': 0.5874687}, {'id': 'https://openalex.org/C33923547', 'wikidata': 'https://www.wikidata.org/wiki/Q395', 'display_name': 'Mathematics', 'level': 0, 'score': 0.48915318}, {'id': 'https://openalex.org/C28826006', 'wikidata': 'https://www.wikidata.org/wiki/Q33521', 'display_name': 'Applied mathematics', 'level': 1, 'score': 0.4607547}, {'id': 'https://openalex.org/C13982400', 'wikidata': 'https://www.wikidata.org/wiki/Q1129902', 'display_name': 'Linear differential equation', 'level': 3, 'score': 0.43588674}, {'id': 'https://openalex.org/C134306372', 'wikidata': 'https://www.wikidata.org/wiki/Q7754', 'display_name': 'Mathematical analysis', 'level': 1, 'score': 0.35247144}, {'id': 'https://openalex.org/C78045399', 'wikidata': 'https://www.wikidata.org/wiki/Q11214', 'display_name': 'Differential equation', 'level': 2, 'score': 0.3164844}], 'mesh': [], 'locations_count': 1, 'locations': [{'is_oa': False, 'landing_page_url': 'http://ci.nii.ac.jp/ncid/BA05421440', 'pdf_url': None, 'source': None, 'license': None, 'license_id': None, 'version': None, 'is_accepted': False, 'is_published': False}], 'best_oa_location': None, 'sustainable_development_goals': [], 'grants': [], 'datasets': [], 'versions': [], 'referenced_works_count': 0, 'referenced_works': [], 'related_works': ['https://openalex.org/W855146283', 'https://openalex.org/W783850014', 'https://openalex.org/W3197630031', 'https://openalex.org/W3185144575', 'https://openalex.org/W3184993850', 'https://openalex.org/W3028561230', 'https://openalex.org/W2921476718', 'https://openalex.org/W2903780600', 'https://openalex.org/W2801464846', 'https://openalex.org/W2730545452', 'https://openalex.org/W2575151195', 'https://openalex.org/W2505780953', 'https://openalex.org/W2491104166', 'https://openalex.org/W2481897087', 'https://openalex.org/W2478019599', 'https://openalex.org/W2315352523', 'https://openalex.org/W2307394492', 'https://openalex.org/W2124584830', 'https://openalex.org/W1975615843', 'https://openalex.org/W1971889031'], 'abstract_inverted_index': None, 'cited_by_api_url': 'https://api.openalex.org/works?filter=cites:W399625183', 'counts_by_year': [{'year': 2022, 'cited_by_count': 1}, {'year': 2020, 'cited_by_count': 2}, {'year': 2017, 'cited_by_count': 1}, {'year': 2016, 'cited_by_count': 1}, {'year': 2015, 'cited_by_count': 1}, {'year': 2014, 'cited_by_count': 3}, {'year': 2013, 'cited_by_count': 2}, {'year': 2012, 'cited_by_count': 2}], 'updated_date': '2024-09-19T00:53:21.572105', 'created_date': '2016-06-24'}