. . . . . "The DOIs are the best way to permanently identify a given digital object, in a format controlled by the International DOI Foundation. We have an agreement with DataCite and this will guarantee the cross-domain findability. When a DOI is not available, users can specify a persistent internal identifier." . . . . "2021-12-31"^^ . "2021-01-01"^^ . . "RSA" . "MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCoKFb7LKlXyBB7BUvjFF9bDJNk0WxH3Xerr4H3v/VCiRVshEDl3BZVekbMMmdRe+TOPyc8AOLd9IAL2VfVVD/T0rmCHk7Pw7DQjI96mwyeXhE7f4g0WG5UT5Pxxm0Rzy7IrYnEaaVDs7dkZUt952M6qWlHfTwCQDcXJhZfLiXoMwIDAQAB" . "f4dy6zoj2pbiK09xpv7THKZhv8jlOhYi6iK/Jeh+v9zJTrmS6OA6+iOg32AV53b2M9/k+UUDJYwe3LFiFx7G3EhTGKw5tnC6rffMxmlHMrKXnIVqtm28f9mp7A0lpMJiciq2gKzX6mhOEzkOx3QnC2dGzb/wpyh74tb4RsCeE5I=" . . "2022-07-20T07:56:23Z"^^ . . . .