. . . . . "No generic system was available, and because of the ammount of metadata records DOI's are not feasible. Therefore dedicated PID-CDI identifier solution." . . . . "2020-12-31"^^ . "2020-01-01"^^ . . "RSA" . "MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCoKFb7LKlXyBB7BUvjFF9bDJNk0WxH3Xerr4H3v/VCiRVshEDl3BZVekbMMmdRe+TOPyc8AOLd9IAL2VfVVD/T0rmCHk7Pw7DQjI96mwyeXhE7f4g0WG5UT5Pxxm0Rzy7IrYnEaaVDs7dkZUt952M6qWlHfTwCQDcXJhZfLiXoMwIDAQAB" . "VrcAw7L4rpRLWeIV4ez3CcIoGxboxvf0bbKeICdRxG03xJN8Dq9Mxo2nrmyOij1pNfUtPoZgGIj5aKyo5LsV1/d93vtOhcUn8RqRdr1x4NZ67JK/s5PFNbhi1psK0UFnFN0SBPnl/cIIW0txg8xhM1YO7IdrQobxe/xMIfRQRwo=" . . "2022-08-04T18:49:50Z"^^ . . . .