. . . . . "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" . "bcC/nPvtAt479yQVBASES6aTLwZtE2YsMdym774nq9T/pfwhcu1KT7IgoWA4dIgPvbHWcT6/4s1Dk2HQ5//kii2rDLU/pIq8zVLZAq4JqpzqdA0dNsIDBkx5ohGe0DZLoh5C0P0z8p8RrkKj5Yxr6ki0XdirQ/hokeu5Lw6scmI=" . . "2023-04-25T06:40:33Z"^^ . . . .