Get quick answers to your questions about the article from our AI researcher chatbot
{'id': 'https://openalex.org/W4253830677', 'doi': 'https://doi.org/10.1016/0550-3213(87)90228-8', 'title': 'Asymmetric orbifolds', 'display_name': 'Asymmetric orbifolds', 'publication_year': 1987, 'publication_date': '1987-01-01', 'ids': {'openalex': 'https://openalex.org/W4253830677', 'doi': 'https://doi.org/10.1016/0550-3213(87)90228-8'}, 'language': 'en', 'primary_location': {'is_oa': False, 'landing_page_url': 'https://doi.org/10.1016/0550-3213(87)90228-8', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S4210194812', 'display_name': 'Nuclear Physics B', 'issn_l': '0550-3213', 'issn': ['0550-3213', '1873-1562'], 'is_oa': True, 'is_in_doaj': True, 'is_core': True, 'host_organization': 'https://openalex.org/P4310320990', 'host_organization_name': 'Elsevier BV', 'host_organization_lineage': ['https://openalex.org/P4310320990'], 'host_organization_lineage_names': ['Elsevier BV'], '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/A5056580626', 'display_name': 'K.S. Narain', 'orcid': None}, 'institutions': [{'id': 'https://openalex.org/I1286704778', 'display_name': 'Rutherford Appleton Laboratory', 'ror': 'https://ror.org/03gq8fr08', 'country_code': 'GB', 'type': 'facility', 'lineage': ['https://openalex.org/I1286704778', 'https://openalex.org/I162524378', 'https://openalex.org/I4210087105']}], 'countries': ['GB'], 'is_corresponding': False, 'raw_author_name': 'K.S. Narain', 'raw_affiliation_strings': ['Rutherford Appleton Laboratory, Chilton, Didcot, OX11 0QX, UK'], 'affiliations': [{'raw_affiliation_string': 'Rutherford Appleton Laboratory, Chilton, Didcot, OX11 0QX, UK', 'institution_ids': ['https://openalex.org/I1286704778']}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5083077455', 'display_name': 'M.H. Sarmadi', 'orcid': None}, 'institutions': [{'id': 'https://openalex.org/I1286704778', 'display_name': 'Rutherford Appleton Laboratory', 'ror': 'https://ror.org/03gq8fr08', 'country_code': 'GB', 'type': 'facility', 'lineage': ['https://openalex.org/I1286704778', 'https://openalex.org/I162524378', 'https://openalex.org/I4210087105']}], 'countries': ['GB'], 'is_corresponding': False, 'raw_author_name': 'M.H. Sarmadi', 'raw_affiliation_strings': ['Rutherford Appleton Laboratory, Chilton, Didcot, OX11 0QX, UK'], 'affiliations': [{'raw_affiliation_string': 'Rutherford Appleton Laboratory, Chilton, Didcot, OX11 0QX, UK', 'institution_ids': ['https://openalex.org/I1286704778']}]}, {'author_position': 'last', 'author': {'id': 'https://openalex.org/A5112582417', 'display_name': 'Cumrun Vafa', 'orcid': None}, 'institutions': [{'id': 'https://openalex.org/I136199984', 'display_name': 'Harvard University', 'ror': 'https://ror.org/03vek6s52', 'country_code': 'US', 'type': 'education', 'lineage': ['https://openalex.org/I136199984']}], 'countries': ['US'], 'is_corresponding': False, 'raw_author_name': 'C. Vafa', 'raw_affiliation_strings': ['Lyman Laboratory of Physics, Harvard University, Cambridge, MA 02138, USA'], 'affiliations': [{'raw_affiliation_string': 'Lyman Laboratory of Physics, Harvard University, Cambridge, MA 02138, USA', 'institution_ids': ['https://openalex.org/I136199984']}]}], 'institution_assertions': [], 'countries_distinct_count': 2, 'institutions_distinct_count': 2, 'corresponding_author_ids': [], 'corresponding_institution_ids': [], 'apc_list': {'value': 0, 'currency': 'USD', 'value_usd': 0, 'provenance': 'doaj'}, 'apc_paid': None, 'fwci': 26.691, 'has_fulltext': True, 'fulltext_origin': 'ngrams', 'cited_by_count': 387, 'citation_normalized_percentile': {'value': 0.999798, 'is_in_top_1_percent': True, 'is_in_top_10_percent': True}, 'cited_by_percentile_year': {'min': 99, 'max': 100}, 'biblio': {'volume': '288', 'issue': None, 'first_page': '551', 'last_page': '577'}, 'is_retracted': False, 'is_paratext': False, 'primary_topic': {'id': 'https://openalex.org/T10025', 'display_name': 'Black Holes and Theoretical Physics', 'score': 0.9981, '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'}}, 'topics': [{'id': 'https://openalex.org/T10025', 'display_name': 'Black Holes and Theoretical Physics', 'score': 0.9981, '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/T10248', 'display_name': 'Nonlinear Waves and Solitons', 'score': 0.9947, 'subfield': {'id': 'https://openalex.org/subfields/3109', 'display_name': 'Statistical and Nonlinear 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/T10287', 'display_name': 'Algebraic structures and combinatorial models', 'score': 0.9691, 'subfield': {'id': 'https://openalex.org/subfields/2608', 'display_name': 'Geometry and Topology'}, 'field': {'id': 'https://openalex.org/fields/26', 'display_name': 'Mathematics'}, 'domain': {'id': 'https://openalex.org/domains/3', 'display_name': 'Physical Sciences'}}], 'keywords': [], 'concepts': [{'id': 'https://openalex.org/C15744967', 'wikidata': 'https://www.wikidata.org/wiki/Q9418', 'display_name': 'Psychology', 'level': 0, 'score': 0.29639208}], 'mesh': [], 'locations_count': 1, 'locations': [{'is_oa': False, 'landing_page_url': 'https://doi.org/10.1016/0550-3213(87)90228-8', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S4210194812', 'display_name': 'Nuclear Physics B', 'issn_l': '0550-3213', 'issn': ['0550-3213', '1873-1562'], 'is_oa': True, 'is_in_doaj': True, 'is_core': True, 'host_organization': 'https://openalex.org/P4310320990', 'host_organization_name': 'Elsevier BV', 'host_organization_lineage': ['https://openalex.org/P4310320990'], 'host_organization_lineage_names': ['Elsevier BV'], 'type': 'journal'}, 'license': None, 'license_id': None, 'version': None, 'is_accepted': False, 'is_published': False}], 'best_oa_location': None, 'sustainable_development_goals': [{'display_name': 'Peace, justice, and strong institutions', 'id': 'https://metadata.un.org/sdg/16', 'score': 0.55}, {'display_name': 'Reduced inequalities', 'id': 'https://metadata.un.org/sdg/10', 'score': 0.45}], 'grants': [], 'datasets': [], 'versions': [], 'referenced_works_count': 19, 'referenced_works': ['https://openalex.org/W1612099944', 'https://openalex.org/W1983899760', 'https://openalex.org/W1988998898', 'https://openalex.org/W2000226231', 'https://openalex.org/W2008891504', 'https://openalex.org/W2031790466', 'https://openalex.org/W2035152063', 'https://openalex.org/W2045900392', 'https://openalex.org/W2058242392', 'https://openalex.org/W2061940093', 'https://openalex.org/W2062862360', 'https://openalex.org/W2066293254', 'https://openalex.org/W2080651095', 'https://openalex.org/W2086981944', 'https://openalex.org/W2093984408', 'https://openalex.org/W2095085006', 'https://openalex.org/W2109672112', 'https://openalex.org/W2120349017', 'https://openalex.org/W4232839816'], 'related_works': ['https://openalex.org/W4245490552', 'https://openalex.org/W4225152035', 'https://openalex.org/W2965437270', 'https://openalex.org/W2313400459', 'https://openalex.org/W2069964982', 'https://openalex.org/W2061531152', 'https://openalex.org/W2044189972', 'https://openalex.org/W2007980826', 'https://openalex.org/W1979597421', 'https://openalex.org/W1974891317'], 'abstract_inverted_index': None, 'cited_by_api_url': 'https://api.openalex.org/works?filter=cites:W4253830677', 'counts_by_year': [{'year': 2024, 'cited_by_count': 13}, {'year': 2023, 'cited_by_count': 7}, {'year': 2022, 'cited_by_count': 6}, {'year': 2021, 'cited_by_count': 11}, {'year': 2020, 'cited_by_count': 7}, {'year': 2019, 'cited_by_count': 3}, {'year': 2018, 'cited_by_count': 7}, {'year': 2017, 'cited_by_count': 9}, {'year': 2016, 'cited_by_count': 7}, {'year': 2015, 'cited_by_count': 9}, {'year': 2014, 'cited_by_count': 11}, {'year': 2013, 'cited_by_count': 6}, {'year': 2012, 'cited_by_count': 3}], 'updated_date': '2024-12-16T03:34:36.403787', 'created_date': '2022-05-12'}