Get quick answers to your questions about the article from our AI researcher chatbot
{'id': 'https://openalex.org/W139708694', 'doi': None, 'title': 'Mechanism of excitation of combination frequencies in ionospheric plasma', 'display_name': 'Mechanism of excitation of combination frequencies in ionospheric plasma', 'publication_year': 1975, 'publication_date': '1975-01-20', 'ids': {'openalex': 'https://openalex.org/W139708694', 'mag': '139708694'}, 'language': 'en', 'primary_location': {'is_oa': False, 'landing_page_url': 'http://ui.adsabs.harvard.edu/abs/1975ZhPmR..21..114K/abstract', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S119930252', 'display_name': 'JETP Letters', 'issn_l': '0021-3640', 'issn': ['0021-3640', '1090-6487'], 'is_oa': False, 'is_in_doaj': False, 'is_core': True, 'host_organization': 'https://openalex.org/P4310320267', 'host_organization_name': 'Pleiades Publishing', 'host_organization_lineage': ['https://openalex.org/P4310320267', 'https://openalex.org/P4310319965'], 'host_organization_lineage_names': ['Pleiades Publishing', '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': [], '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/A5067975170', 'display_name': 'D. S. Kotik', 'orcid': 'https://orcid.org/0000-0002-2121-9728'}, 'institutions': [], 'countries': [], 'is_corresponding': False, 'raw_author_name': 'D. S. Kotik', 'raw_affiliation_strings': [], 'affiliations': []}, {'author_position': 'last', 'author': {'id': 'https://openalex.org/A5089562740', 'display_name': 'V. Yu. Trakhtengerts', 'orcid': None}, 'institutions': [], 'countries': [], 'is_corresponding': False, 'raw_author_name': 'V. Yu. Trakhtengerts', 'raw_affiliation_strings': [], 'affiliations': []}], 'institution_assertions': [], 'countries_distinct_count': 0, 'institutions_distinct_count': 0, 'corresponding_author_ids': [], 'corresponding_institution_ids': [], 'apc_list': None, 'apc_paid': None, 'fwci': 0.0, 'has_fulltext': False, 'cited_by_count': 15, 'citation_normalized_percentile': {'value': 0.649425, 'is_in_top_1_percent': False, 'is_in_top_10_percent': False}, 'cited_by_percentile_year': {'min': 85, 'max': 86}, 'biblio': {'volume': '21', 'issue': None, 'first_page': '114', 'last_page': '118'}, 'is_retracted': False, 'is_paratext': False, 'primary_topic': {'id': 'https://openalex.org/T12424', 'display_name': 'Study of Earthquake Precursor Phenomena', 'score': 0.9254, 'subfield': {'id': 'https://openalex.org/subfields/1908', 'display_name': 'Geophysics'}, 'field': {'id': 'https://openalex.org/fields/19', 'display_name': 'Earth and Planetary Sciences'}, 'domain': {'id': 'https://openalex.org/domains/3', 'display_name': 'Physical Sciences'}}, 'topics': [{'id': 'https://openalex.org/T12424', 'display_name': 'Study of Earthquake Precursor Phenomena', 'score': 0.9254, 'subfield': {'id': 'https://openalex.org/subfields/1908', 'display_name': 'Geophysics'}, 'field': {'id': 'https://openalex.org/fields/19', 'display_name': 'Earth and Planetary Sciences'}, 'domain': {'id': 'https://openalex.org/domains/3', 'display_name': 'Physical Sciences'}}], 'keywords': [{'id': 'https://openalex.org/keywords/ionospheric-anomalies', 'display_name': 'Ionospheric Anomalies', 'score': 0.667939}, {'id': 'https://openalex.org/keywords/lithosphere-atmosphere-ionosphere-coupling', 'display_name': 'Lithosphere-Atmosphere-Ionosphere Coupling', 'score': 0.607654}, {'id': 'https://openalex.org/keywords/seismic-electromagnetics', 'display_name': 'Seismic Electromagnetics', 'score': 0.502633}], 'concepts': [{'id': 'https://openalex.org/C116403925', 'wikidata': 'https://www.wikidata.org/wiki/Q162219', 'display_name': 'Ionosphere', 'level': 2, 'score': 0.8366722}, {'id': 'https://openalex.org/C82706917', 'wikidata': 'https://www.wikidata.org/wiki/Q10251', 'display_name': 'Plasma', 'level': 2, 'score': 0.6883968}, {'id': 'https://openalex.org/C83581075', 'wikidata': 'https://www.wikidata.org/wiki/Q1361503', 'display_name': 'Excitation', 'level': 2, 'score': 0.6832942}, {'id': 'https://openalex.org/C89611455', 'wikidata': 'https://www.wikidata.org/wiki/Q6804646', 'display_name': 'Mechanism (biology)', 'level': 2, 'score': 0.65184325}, {'id': 'https://openalex.org/C184779094', 'wikidata': 'https://www.wikidata.org/wiki/Q26383', 'display_name': 'Atomic physics', 'level': 1, 'score': 0.5541557}, {'id': 'https://openalex.org/C121332964', 'wikidata': 'https://www.wikidata.org/wiki/Q413', 'display_name': 'Physics', 'level': 0, 'score': 0.46825132}, {'id': 'https://openalex.org/C30475298', 'wikidata': 'https://www.wikidata.org/wiki/Q909554', 'display_name': 'Computational physics', 'level': 1, 'score': 0.39243168}, {'id': 'https://openalex.org/C8058405', 'wikidata': 'https://www.wikidata.org/wiki/Q46255', 'display_name': 'Geophysics', 'level': 1, 'score': 0.38370445}, {'id': 'https://openalex.org/C185544564', 'wikidata': 'https://www.wikidata.org/wiki/Q81197', 'display_name': 'Nuclear physics', 'level': 1, 'score': 0.21217433}, {'id': 'https://openalex.org/C62520636', 'wikidata': 'https://www.wikidata.org/wiki/Q944', 'display_name': 'Quantum mechanics', 'level': 1, 'score': 0.08016822}], 'mesh': [], 'locations_count': 1, 'locations': [{'is_oa': False, 'landing_page_url': 'http://ui.adsabs.harvard.edu/abs/1975ZhPmR..21..114K/abstract', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S119930252', 'display_name': 'JETP Letters', 'issn_l': '0021-3640', 'issn': ['0021-3640', '1090-6487'], 'is_oa': False, 'is_in_doaj': False, 'is_core': True, 'host_organization': 'https://openalex.org/P4310320267', 'host_organization_name': 'Pleiades Publishing', 'host_organization_lineage': ['https://openalex.org/P4310320267', 'https://openalex.org/P4310319965'], 'host_organization_lineage_names': ['Pleiades Publishing', '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': 0, 'referenced_works': [], 'related_works': ['https://openalex.org/W343525352', 'https://openalex.org/W336259515', 'https://openalex.org/W31993168', 'https://openalex.org/W3148458843', 'https://openalex.org/W3111893636', 'https://openalex.org/W3111186196', 'https://openalex.org/W3092672040', 'https://openalex.org/W3036001796', 'https://openalex.org/W3026915559', 'https://openalex.org/W3026076886', 'https://openalex.org/W3023521855', 'https://openalex.org/W3013308690', 'https://openalex.org/W3005579561', 'https://openalex.org/W2998521690', 'https://openalex.org/W2995005173', 'https://openalex.org/W2044899187', 'https://openalex.org/W2038902992', 'https://openalex.org/W1970208917', 'https://openalex.org/W1936966463', 'https://openalex.org/W113835789'], 'abstract_inverted_index': None, 'cited_by_api_url': 'https://api.openalex.org/works?filter=cites:W139708694', 'counts_by_year': [{'year': 2022, 'cited_by_count': 1}, {'year': 2020, 'cited_by_count': 1}, {'year': 2018, 'cited_by_count': 1}, {'year': 2015, 'cited_by_count': 2}], 'updated_date': '2024-09-15T09:57:54.923077', 'created_date': '2016-06-24'}