. . . . . "No generic system was available, and because of the ammount of metadata records DOI's are not feasible. Therefore dedicated PID-CDI identifier solution." . . . . "2021-12-31"^^ . "2021-01-01"^^ . . "RSA" . "MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCoKFb7LKlXyBB7BUvjFF9bDJNk0WxH3Xerr4H3v/VCiRVshEDl3BZVekbMMmdRe+TOPyc8AOLd9IAL2VfVVD/T0rmCHk7Pw7DQjI96mwyeXhE7f4g0WG5UT5Pxxm0Rzy7IrYnEaaVDs7dkZUt952M6qWlHfTwCQDcXJhZfLiXoMwIDAQAB" . "ABCXpg84EyUL1FHrxMPWHi1scV46I+i4Wo7/r8FZi3sSDb0c/ese3+vrf4L7HH2O4Ha6dRpnUEiFTKq5tT/MAcPYF224Oa8w4at1iYKUD/E+n5diYd+rpMxUy7dHMpmeNzxCq6WmcPVAsEyUgn0iwU0H5c3gHhH9x6s+7DO1llE=" . . "2023-04-25T02:26:05Z"^^ . . . .