Get quick answers to your questions about the article from our AI researcher chatbot
{'id': 'https://openalex.org/W1485936747', 'doi': 'https://doi.org/10.1007/bf00766139', 'title': 'Covariant Newtonian limit of Lorentz space-times', 'display_name': 'Covariant Newtonian limit of Lorentz space-times', 'publication_year': 1976, 'publication_date': '1976-05-01', 'ids': {'openalex': 'https://openalex.org/W1485936747', 'doi': 'https://doi.org/10.1007/bf00766139', 'mag': '1485936747'}, 'language': 'en', 'primary_location': {'is_oa': False, 'landing_page_url': 'https://doi.org/10.1007/bf00766139', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S146652483', 'display_name': 'General Relativity and Gravitation', 'issn_l': '0001-7701', 'issn': ['0001-7701', '1572-9532'], '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/P4310319965', 'https://openalex.org/P4310319900'], 'host_organization_lineage_names': ['Springer Nature', 'Springer Science+Business Media'], 'type': 'journal'}, 'license': None, 'license_id': None, 'version': None, 'is_accepted': False, 'is_published': False}, 'type': 'article', 'type_crossref': 'journal-article', 'indexed_in': ['crossref'], '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/A5111535151', 'display_name': 'H. P. Künzle', 'orcid': None}, 'institutions': [{'id': 'https://openalex.org/I154425047', 'display_name': 'University of Alberta', 'ror': 'https://ror.org/0160cpw27', 'country_code': 'CA', 'type': 'education', 'lineage': ['https://openalex.org/I154425047']}, {'id': 'https://openalex.org/I4210136988', 'display_name': 'Délégation Provence et Corse', 'ror': 'https://ror.org/049qgqg40', 'country_code': 'FR', 'type': 'government', 'lineage': ['https://openalex.org/I1294671590', 'https://openalex.org/I4210136988', 'https://openalex.org/I4210139971']}], 'countries': ['CA', 'FR'], 'is_corresponding': True, 'raw_author_name': 'H. P. Künzle', 'raw_affiliation_strings': ['Centre National de la Recherche Scientifique, Marseille, France', 'Department of Mathematics, University of Alberta, Edmonton, Canada'], 'affiliations': [{'raw_affiliation_string': 'Department of Mathematics, University of Alberta, Edmonton, Canada', 'institution_ids': ['https://openalex.org/I154425047']}, {'raw_affiliation_string': 'Centre National de la Recherche Scientifique, Marseille, France', 'institution_ids': ['https://openalex.org/I4210136988']}]}], 'institution_assertions': [], 'countries_distinct_count': 2, 'institutions_distinct_count': 2, 'corresponding_author_ids': ['https://openalex.org/A5111535151'], 'corresponding_institution_ids': ['https://openalex.org/I154425047', 'https://openalex.org/I4210136988'], 'apc_list': {'value': 2390, 'currency': 'EUR', 'value_usd': 2990, 'provenance': 'doaj'}, 'apc_paid': None, 'fwci': 0.498, 'has_fulltext': True, 'fulltext_origin': 'ngrams', 'cited_by_count': 118, 'citation_normalized_percentile': {'value': 0.97006, 'is_in_top_1_percent': False, 'is_in_top_10_percent': True}, 'cited_by_percentile_year': {'min': 97, 'max': 98}, 'biblio': {'volume': '7', 'issue': '5', 'first_page': '445', 'last_page': '457'}, 'is_retracted': False, 'is_paratext': False, 'primary_topic': {'id': 'https://openalex.org/T11960', 'display_name': 'Relativity and Gravitational Theory', 'score': 0.9976, 'subfield': {'id': 'https://openalex.org/subfields/3103', 'display_name': 'Astronomy and Astrophysics'}, 'field': {'id': 'https://openalex.org/fields/31', 'display_name': 'Physics and Astronomy'}, 'domain': {'id': 'https://openalex.org/domains/3', 'display_name': 'Physical Sciences'}}, 'topics': [{'id': 'https://openalex.org/T11960', 'display_name': 'Relativity and Gravitational Theory', 'score': 0.9976, 'subfield': {'id': 'https://openalex.org/subfields/3103', 'display_name': 'Astronomy and Astrophysics'}, 'field': {'id': 'https://openalex.org/fields/31', 'display_name': 'Physics and Astronomy'}, 'domain': {'id': 'https://openalex.org/domains/3', 'display_name': 'Physical Sciences'}}, {'id': 'https://openalex.org/T10095', 'display_name': 'Cosmology and Gravitation Theories', 'score': 0.9971, 'subfield': {'id': 'https://openalex.org/subfields/3103', 'display_name': 'Astronomy and Astrophysics'}, 'field': {'id': 'https://openalex.org/fields/31', 'display_name': 'Physics and Astronomy'}, 'domain': {'id': 'https://openalex.org/domains/3', 'display_name': 'Physical Sciences'}}, {'id': 'https://openalex.org/T11683', 'display_name': 'Quantum and Classical Electrodynamics', 'score': 0.9971, 'subfield': {'id': 'https://openalex.org/subfields/3107', 'display_name': 'Atomic and Molecular Physics, and Optics'}, 'field': {'id': 'https://openalex.org/fields/31', 'display_name': 'Physics and Astronomy'}, 'domain': {'id': 'https://openalex.org/domains/3', 'display_name': 'Physical Sciences'}}], 'keywords': [{'id': 'https://openalex.org/keywords/electromagnetism', 'display_name': 'Electromagnetism', 'score': 0.6736342}, {'id': 'https://openalex.org/keywords/newtonian-limit', 'display_name': 'Newtonian limit', 'score': 0.6577939}], 'concepts': [{'id': 'https://openalex.org/C121332964', 'wikidata': 'https://www.wikidata.org/wiki/Q413', 'display_name': 'Physics', 'level': 0, 'score': 0.8690568}, {'id': 'https://openalex.org/C206236147', 'wikidata': 'https://www.wikidata.org/wiki/Q3555165', 'display_name': 'Covariance and contravariance of vectors', 'level': 2, 'score': 0.8258188}, {'id': 'https://openalex.org/C9136319', 'wikidata': 'https://www.wikidata.org/wiki/Q362640', 'display_name': 'Covariant transformation', 'level': 2, 'score': 0.77707464}, {'id': 'https://openalex.org/C5667645', 'wikidata': 'https://www.wikidata.org/wiki/Q217255', 'display_name': 'Lorentz transformation', 'level': 2, 'score': 0.6933975}, {'id': 'https://openalex.org/C91748784', 'wikidata': 'https://www.wikidata.org/wiki/Q11406', 'display_name': 'Electromagnetism', 'level': 2, 'score': 0.6736342}, {'id': 'https://openalex.org/C2778654791', 'wikidata': 'https://www.wikidata.org/wiki/Q7020536', 'display_name': 'Newtonian limit', 'level': 3, 'score': 0.6577939}, {'id': 'https://openalex.org/C151201525', 'wikidata': 'https://www.wikidata.org/wiki/Q177239', 'display_name': 'Limit (mathematics)', 'level': 2, 'score': 0.5891578}, {'id': 'https://openalex.org/C37914503', 'wikidata': 'https://www.wikidata.org/wiki/Q156495', 'display_name': 'Mathematical physics', 'level': 1, 'score': 0.5856002}, {'id': 'https://openalex.org/C294558', 'wikidata': 'https://www.wikidata.org/wiki/Q366968', 'display_name': 'Newtonian fluid', 'level': 2, 'score': 0.53970563}, {'id': 'https://openalex.org/C192939610', 'wikidata': 'https://www.wikidata.org/wiki/Q188444', 'display_name': 'Differential geometry', 'level': 2, 'score': 0.47922784}, {'id': 'https://openalex.org/C74650414', 'wikidata': 'https://www.wikidata.org/wiki/Q11397', 'display_name': 'Classical mechanics', 'level': 1, 'score': 0.46117178}, {'id': 'https://openalex.org/C155281189', 'wikidata': 'https://www.wikidata.org/wiki/Q3518150', 'display_name': 'Tensor (intrinsic definition)', 'level': 2, 'score': 0.45570147}, {'id': 'https://openalex.org/C149324446', 'wikidata': 'https://www.wikidata.org/wiki/Q43514', 'display_name': 'Theory of relativity', 'level': 2, 'score': 0.4402695}, {'id': 'https://openalex.org/C13355873', 'wikidata': 'https://www.wikidata.org/wiki/Q2920850', 'display_name': 'Connection (principal bundle)', 'level': 2, 'score': 0.42835763}, {'id': 'https://openalex.org/C134306372', 'wikidata': 'https://www.wikidata.org/wiki/Q7754', 'display_name': 'Mathematical analysis', 'level': 1, 'score': 0.24479079}, {'id': 'https://openalex.org/C62520636', 'wikidata': 'https://www.wikidata.org/wiki/Q944', 'display_name': 'Quantum mechanics', 'level': 1, 'score': 0.19417733}, {'id': 'https://openalex.org/C33923547', 'wikidata': 'https://www.wikidata.org/wiki/Q395', 'display_name': 'Mathematics', 'level': 0, 'score': 0.102148086}, {'id': 'https://openalex.org/C2524010', 'wikidata': 'https://www.wikidata.org/wiki/Q8087', 'display_name': 'Geometry', 'level': 1, 'score': 0.092960656}], 'mesh': [], 'locations_count': 1, 'locations': [{'is_oa': False, 'landing_page_url': 'https://doi.org/10.1007/bf00766139', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S146652483', 'display_name': 'General Relativity and Gravitation', 'issn_l': '0001-7701', 'issn': ['0001-7701', '1572-9532'], '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/P4310319965', 'https://openalex.org/P4310319900'], 'host_organization_lineage_names': ['Springer Nature', 'Springer Science+Business Media'], 'type': 'journal'}, 'license': None, 'license_id': None, 'version': None, 'is_accepted': False, 'is_published': False}], 'best_oa_location': None, 'sustainable_development_goals': [{'score': 0.64, 'display_name': 'Life on land', 'id': 'https://metadata.un.org/sdg/15'}], 'grants': [], 'datasets': [], 'versions': [], 'referenced_works_count': 3, 'referenced_works': ['https://openalex.org/W1981244252', 'https://openalex.org/W2089617006', 'https://openalex.org/W2331490077'], 'related_works': ['https://openalex.org/W4378576405', 'https://openalex.org/W3107056257', 'https://openalex.org/W3021036281', 'https://openalex.org/W2160009080', 'https://openalex.org/W2126612664', 'https://openalex.org/W2117196758', 'https://openalex.org/W2075668545', 'https://openalex.org/W2051173062', 'https://openalex.org/W2023295078', 'https://openalex.org/W1832924505'], 'abstract_inverted_index': None, 'cited_by_api_url': 'https://api.openalex.org/works?filter=cites:W1485936747', 'counts_by_year': [{'year': 2024, 'cited_by_count': 8}, {'year': 2023, 'cited_by_count': 4}, {'year': 2022, 'cited_by_count': 6}, {'year': 2021, 'cited_by_count': 4}, {'year': 2020, 'cited_by_count': 2}, {'year': 2019, 'cited_by_count': 3}, {'year': 2018, 'cited_by_count': 5}, {'year': 2017, 'cited_by_count': 5}, {'year': 2016, 'cited_by_count': 7}, {'year': 2015, 'cited_by_count': 4}, {'year': 2014, 'cited_by_count': 2}, {'year': 2012, 'cited_by_count': 3}], 'updated_date': '2025-01-10T20:06:55.089610', 'created_date': '2016-06-24'}