. . . . . "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" . "oqLcDdwc4Ou5UX/JsSGO2tbEu626H2trsEjXSxZ+vhsb5ySXyIPX5MSPywEQCC1lJBWfWLLVB7p4KQeN1bMIa0AD9c0YPRrHKCUH/iZ7cycxv25WhTp+0bIeAaxThZ89eYNZqBkaVOe8tLJsvewmtXPVI9YznVaGBPD1Wtvhuxs=" . . "2023-01-16T12:51:28Z"^^ . . . .