. . . . . "No generic system was available, and because of the ammount of metadata records DOI's are not feasible. Therefore dedicated PID-CDI identifier solution." . . . . "2020-12-31"^^ . "2020-01-01"^^ . . "RSA" . "MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCoKFb7LKlXyBB7BUvjFF9bDJNk0WxH3Xerr4H3v/VCiRVshEDl3BZVekbMMmdRe+TOPyc8AOLd9IAL2VfVVD/T0rmCHk7Pw7DQjI96mwyeXhE7f4g0WG5UT5Pxxm0Rzy7IrYnEaaVDs7dkZUt952M6qWlHfTwCQDcXJhZfLiXoMwIDAQAB" . "gr2R3RyIDDs+fDnHknY1rLbwX5PTy67lOoNyuf+4iO97wynfCliPrLiYSGy40tCBg/mTMisKvGDjOPchV//I++ZTUgIWR64oM9L6WwBJt4OvALQL3HLUTTzqzF8khRQGDlBzsVdwKXK8ZVyGkAkroPT6D4uH07kCM4YkiY4ge9A=" . . "2023-04-25T06:42:33Z"^^ . . . .