. . . . . "No generic system was available, and because of the ammount of metadata records DOI's are not feasible. Therefore dedicated PID-CDI identifier solution." . . . . "2019-12-31"^^ . "2019-01-01"^^ . . "RSA" . "MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCoKFb7LKlXyBB7BUvjFF9bDJNk0WxH3Xerr4H3v/VCiRVshEDl3BZVekbMMmdRe+TOPyc8AOLd9IAL2VfVVD/T0rmCHk7Pw7DQjI96mwyeXhE7f4g0WG5UT5Pxxm0Rzy7IrYnEaaVDs7dkZUt952M6qWlHfTwCQDcXJhZfLiXoMwIDAQAB" . "XXRsuBNYRywGpok9S7ewalXdwfNoMCNqY/a6gI7VSFuzl2Y4vnCZdry54RgQnStq3KW8s4nAa4fpWaP89o93qqVQ2cBN6MaSzNDCVuIyUitecB1xtcTW/48WVGZJ/ru6DlXvWO+0XGnSI3Y4lGHatWoY/e1O5SFTpMylUQ8v1eU=" . . "2023-04-25T06:45:00Z"^^ . . . .