Get quick answers to your questions about the article from our AI researcher chatbot
{'id': 'https://openalex.org/W1548322602', 'doi': 'https://doi.org/10.1007/bf02738775', 'title': 'Properties of relativistic bound states', 'display_name': 'Properties of relativistic bound states', 'publication_year': 1966, 'publication_date': '1966-11-01', 'ids': {'openalex': 'https://openalex.org/W1548322602', 'doi': 'https://doi.org/10.1007/bf02738775', 'mag': '1548322602'}, 'language': 'en', 'primary_location': {'is_oa': False, 'landing_page_url': 'https://doi.org/10.1007/bf02738775', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S4210179801', 'display_name': 'Il Nuovo Cimento A', 'issn_l': '0369-3546', 'issn': ['0369-3546'], 'is_oa': False, 'is_in_doaj': False, 'is_core': False, 'host_organization': 'https://openalex.org/P4310319965', 'host_organization_name': 'Springer Nature', 'host_organization_lineage': ['https://openalex.org/P4310319965'], 'host_organization_lineage_names': ['Springer Nature'], '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/A5048911531', 'display_name': 'M. Ciafaloni', 'orcid': None}, 'institutions': [{'id': 'https://openalex.org/I157210198', 'display_name': 'Scuola Normale Superiore', 'ror': 'https://ror.org/03aydme10', 'country_code': 'IT', 'type': 'education', 'lineage': ['https://openalex.org/I157210198']}], 'countries': ['IT'], 'is_corresponding': False, 'raw_author_name': 'M. Ciafaloni', 'raw_affiliation_strings': ['Scuola Normale Superiore, Pisa, Italy'], 'affiliations': [{'raw_affiliation_string': 'Scuola Normale Superiore, Pisa, Italy', 'institution_ids': ['https://openalex.org/I157210198']}]}, {'author_position': 'last', 'author': {'id': 'https://openalex.org/A5078884962', 'display_name': 'Pietro Menotti', 'orcid': 'https://orcid.org/0000-0002-0606-3390'}, 'institutions': [{'id': 'https://openalex.org/I157210198', 'display_name': 'Scuola Normale Superiore', 'ror': 'https://ror.org/03aydme10', 'country_code': 'IT', 'type': 'education', 'lineage': ['https://openalex.org/I157210198']}], 'countries': ['IT'], 'is_corresponding': False, 'raw_author_name': 'P. Menotti', 'raw_affiliation_strings': ['Scuola Normale Superiore, Pisa, Italy'], 'affiliations': [{'raw_affiliation_string': 'Scuola Normale Superiore, Pisa, Italy', 'institution_ids': ['https://openalex.org/I157210198']}]}], 'institution_assertions': [], 'countries_distinct_count': 1, 'institutions_distinct_count': 1, 'corresponding_author_ids': [], 'corresponding_institution_ids': [], 'apc_list': None, 'apc_paid': None, 'fwci': 0.708, 'has_fulltext': True, 'fulltext_origin': 'ngrams', 'cited_by_count': 6, 'citation_normalized_percentile': {'value': 0.458219, 'is_in_top_1_percent': False, 'is_in_top_10_percent': False}, 'cited_by_percentile_year': {'min': 79, 'max': 81}, 'biblio': {'volume': '46', 'issue': '1', 'first_page': '162', 'last_page': '170'}, 'is_retracted': False, 'is_paratext': False, 'primary_topic': {'id': 'https://openalex.org/T10425', 'display_name': 'Cold Atom Physics and Bose-Einstein Condensates', 'score': 0.9978, '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'}}, 'topics': [{'id': 'https://openalex.org/T10425', 'display_name': 'Cold Atom Physics and Bose-Einstein Condensates', 'score': 0.9978, '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'}}, {'id': 'https://openalex.org/T10224', 'display_name': 'Quantum Chromodynamics and Particle Interactions', 'score': 0.9954, 'subfield': {'id': 'https://openalex.org/subfields/3106', 'display_name': 'Nuclear and High Energy Physics'}, '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/T10037', 'display_name': 'Physics of Superconductivity and Magnetism', 'score': 0.9946, 'subfield': {'id': 'https://openalex.org/subfields/3104', 'display_name': 'Condensed Matter Physics'}, 'field': {'id': 'https://openalex.org/fields/31', 'display_name': 'Physics and Astronomy'}, 'domain': {'id': 'https://openalex.org/domains/3', 'display_name': 'Physical Sciences'}}], 'keywords': [], 'concepts': [{'id': 'https://openalex.org/C174084160', 'wikidata': 'https://www.wikidata.org/wiki/Q908049', 'display_name': 'Bound state', 'level': 2, 'score': 0.79198295}, {'id': 'https://openalex.org/C57691317', 'wikidata': 'https://www.wikidata.org/wiki/Q1289248', 'display_name': 'Scalar (mathematics)', 'level': 2, 'score': 0.6806396}, {'id': 'https://openalex.org/C93282013', 'wikidata': 'https://www.wikidata.org/wiki/Q420754', 'display_name': 'Binding energy', 'level': 2, 'score': 0.62887424}, {'id': 'https://openalex.org/C121332964', 'wikidata': 'https://www.wikidata.org/wiki/Q413', 'display_name': 'Physics', 'level': 0, 'score': 0.60875034}, {'id': 'https://openalex.org/C79118098', 'wikidata': 'https://www.wikidata.org/wiki/Q43101', 'display_name': 'Boson', 'level': 2, 'score': 0.59870934}, {'id': 'https://openalex.org/C151201525', 'wikidata': 'https://www.wikidata.org/wiki/Q177239', 'display_name': 'Limit (mathematics)', 'level': 2, 'score': 0.5537907}, {'id': 'https://openalex.org/C28719098', 'wikidata': 'https://www.wikidata.org/wiki/Q44946', 'display_name': 'Point (geometry)', 'level': 2, 'score': 0.47377065}, {'id': 'https://openalex.org/C62520636', 'wikidata': 'https://www.wikidata.org/wiki/Q944', 'display_name': 'Quantum mechanics', 'level': 1, 'score': 0.37997723}, {'id': 'https://openalex.org/C3079626', 'wikidata': 'https://www.wikidata.org/wiki/Q234881', 'display_name': 'Quantum electrodynamics', 'level': 1, 'score': 0.37429565}, {'id': 'https://openalex.org/C37914503', 'wikidata': 'https://www.wikidata.org/wiki/Q156495', 'display_name': 'Mathematical physics', 'level': 1, 'score': 0.3585873}, {'id': 'https://openalex.org/C33332235', 'wikidata': 'https://www.wikidata.org/wiki/Q18362', 'display_name': 'Theoretical physics', 'level': 1, 'score': 0.35731497}, {'id': 'https://openalex.org/C33923547', 'wikidata': 'https://www.wikidata.org/wiki/Q395', 'display_name': 'Mathematics', 'level': 0, 'score': 0.17647484}, {'id': 'https://openalex.org/C134306372', 'wikidata': 'https://www.wikidata.org/wiki/Q7754', 'display_name': 'Mathematical analysis', 'level': 1, 'score': 0.061992288}, {'id': 'https://openalex.org/C2524010', 'wikidata': 'https://www.wikidata.org/wiki/Q8087', 'display_name': 'Geometry', 'level': 1, 'score': 0.0}], 'mesh': [], 'locations_count': 1, 'locations': [{'is_oa': False, 'landing_page_url': 'https://doi.org/10.1007/bf02738775', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S4210179801', 'display_name': 'Il Nuovo Cimento A', 'issn_l': '0369-3546', 'issn': ['0369-3546'], 'is_oa': False, 'is_in_doaj': False, 'is_core': False, 'host_organization': 'https://openalex.org/P4310319965', 'host_organization_name': 'Springer Nature', 'host_organization_lineage': ['https://openalex.org/P4310319965'], 'host_organization_lineage_names': ['Springer Nature'], 'type': 'journal'}, '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': 11, 'referenced_works': ['https://openalex.org/W1673145971', 'https://openalex.org/W1968238268', 'https://openalex.org/W1973837838', 'https://openalex.org/W1983876893', 'https://openalex.org/W2006767942', 'https://openalex.org/W2020047775', 'https://openalex.org/W2038553270', 'https://openalex.org/W2065498721', 'https://openalex.org/W2090353710', 'https://openalex.org/W2616554026', 'https://openalex.org/W3141094638'], 'related_works': ['https://openalex.org/W2553443443', 'https://openalex.org/W2391467650', 'https://openalex.org/W2112669826', 'https://openalex.org/W2068358989', 'https://openalex.org/W2025531435', 'https://openalex.org/W2011096797', 'https://openalex.org/W1987731806', 'https://openalex.org/W1979923445', 'https://openalex.org/W1979230844', 'https://openalex.org/W1978428316'], 'abstract_inverted_index': None, 'cited_by_api_url': 'https://api.openalex.org/works?filter=cites:W1548322602', 'counts_by_year': [], 'updated_date': '2024-12-17T03:10:09.929023', 'created_date': '2016-06-24'}