. . . . . "No generic system was available, and because of the ammount of metadata records DOI's are not feasible. Therefore dedicated PID-CDI identifier solution." . . . . "2019-12-31"^^ . "2019-01-01"^^ . . "RSA" . "MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCoKFb7LKlXyBB7BUvjFF9bDJNk0WxH3Xerr4H3v/VCiRVshEDl3BZVekbMMmdRe+TOPyc8AOLd9IAL2VfVVD/T0rmCHk7Pw7DQjI96mwyeXhE7f4g0WG5UT5Pxxm0Rzy7IrYnEaaVDs7dkZUt952M6qWlHfTwCQDcXJhZfLiXoMwIDAQAB" . "MyDG7HpNcU88dcyPsx9bqrYY42yGXsF9R2yPIRFYPDk84BUJg/aWrZJgPvlrxs2GaKWKyWLVMAPXyb0PJGm/E05OyoC8OR9aJ+XZBzh+6ok8G3QEYBl01Reg/Cp7W98LRNg/WnGczfmXruqIBh2V5uUX0lRvo29T7fYpFBRwBeI=" . . "2022-07-29T21:21:58Z"^^ . . . .