. . . . . "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" . "avNH+u9jVRCEmq9x6GTV9D+DiNHqkFWjq6f6x1L2mzqDP8VGwJ4VfHX33Rxzf0BEfWYwtppsKkWWkLBBjyLQXJjS9yGD4tLkuVTtK4ZTivMc/5uxLdTk8CpcM3Xypa+Nn9sIXgikc/v5oIBbae4L8PQ9aP9733QZ/HBbE5iyN6c=" . . "2022-07-29T21:07:48Z"^^ . . . .