{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,28]],"date-time":"2026-09-28T19:54:16Z","timestamp":1790625256031,"version":"4.1.0"},"reference-count":0,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[1930,1,1]],"date-time":"1930-01-01T00:00:00Z","timestamp":-1262304000000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"},{"start":{"date-parts":[[2016,12,23]],"date-time":"2016-12-23T00:00:00Z","timestamp":1482451200000},"content-version":"vor","delay-in-days":31768,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Proceedings of the London Mathematical Society"],"published-print":{"date-parts":[[1930]]},"DOI":"10.1112\/plms\/s2-30.1.264","type":"journal-article","created":{"date-parts":[[2007,2,13]],"date-time":"2007-02-13T21:50:39Z","timestamp":1171403439000},"page":"264-286","source":"Crossref","is-referenced-by-count":1152,"title":["On a Problem of Formal Logic"],"prefix":"10.1112","volume":"s2-30","author":[{"given":"F. P.","family":"Ramsey","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2016,12,23]]},"container-title":["Proceedings of the London Mathematical Society"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.wiley.com\/onlinelibrary\/tdm\/v1\/articles\/10.1112%2Fplms%2Fs2-30.1.264","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"http:\/\/onlinelibrary.wiley.com\/wol1\/doi\/10.1112\/plms\/s2-30.1.264\/fullpdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2021,7,19]],"date-time":"2021-07-19T18:32:28Z","timestamp":1626719548000},"score":1,"resource":{"primary":{"URL":"http:\/\/doi.wiley.com\/10.1112\/plms\/s2-30.1.264"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1930]]},"references-count":0,"journal-issue":{"issue":"1","published-print":{"date-parts":[[1930]]}},"URL":"https:\/\/doi.org\/10.1112\/plms\/s2-30.1.264","archive":["Portico"],"relation":{},"ISSN":["0024-6115"],"issn-type":[{"value":"0024-6115","type":"print"}],"subject":[],"published":{"date-parts":[[1930]]}}}