. . . . . "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" . "ae7gbAgyl+hxBt7p1Fe4TRSHoVl6Tpi/9SWsC7Dr6rxMemDQL/VCFGklZIro1v75KbDo9GGIqDhLcn3hVpghnd7VR0z5Yw+Z5ErgxzhulH2OpQfgFMp5XYMcJUjUBMdqXCCMlBB3w/MuKT45jVISoyI92Mr7YBDa5EMKzC9y/KI=" . . "2022-07-20T08:09:00Z"^^ . . . .