. . . . . "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" . "Hnae8j3/h0S7V7V9Zzx5PZCs6GcvJqTnkci9Xe8FLLiXmnWoyByGnVXnt73vJwzGnUnPpD4YUTC77H9qg1l9xZPmyPIePinAzZehoKR1Gw7gd4c2OxgcL+ulIzuMsFsUhCH0S/uXbMHa2caZTIrSf27CEWgrqL12h7xDOqCA2Hc=" . . "2022-07-21T13:10:57Z"^^ . . . .