. . . . . "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" . "iNzMYD3K44hj26D25QMV9auUFlsbRQBBj5iqmxy3dRs8NOw9uGjKNM5kbNxI7X5gJtXIleMt3f5A1iTJT1ijqZ76qR8Gvsu8KLMVcL8a6oQADx7GM4C8spMUd0nWRvzT5MfD8wjgVm3cxEmpObHoz6c6c8BTTNqvaOWDA+gS/EA=" . . "2022-07-21T13:10:57Z"^^ . . . .