. . . . . "CrossRef metadata retrieval (free options), https://www.crossref.org/services/metadata-retrieval/" . . . . "2050-12-31"^^ . "2022-10-04"^^ . . "RSA" . "MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCoKFb7LKlXyBB7BUvjFF9bDJNk0WxH3Xerr4H3v/VCiRVshEDl3BZVekbMMmdRe+TOPyc8AOLd9IAL2VfVVD/T0rmCHk7Pw7DQjI96mwyeXhE7f4g0WG5UT5Pxxm0Rzy7IrYnEaaVDs7dkZUt952M6qWlHfTwCQDcXJhZfLiXoMwIDAQAB" . "K6i/yzNDOemj0O9CBHtsgGHYtwcK3kifUle3PPNkiqAyqmc3QVaGp/YWaMSzRqfrpGzOMTWrOduRhuX7dkIfd+KHBYy1P8nDsoMMMCjFfrKu/YxeIUSYMVIOGVRvKAptTqoL5OoU0oQQlOJnNGmvonMt78uTGnnMTQTrJa/iHkI=" . . "2024-01-17T20:45:20Z"^^ . . . .