. . . . . "No generic system was available, and because of the ammount of metadata records DOI's are not feasible. Therefore dedicated PID-CDI identifier solution." . . . . "2022-12-31"^^ . "2022-01-01"^^ . . "RSA" . "MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCoKFb7LKlXyBB7BUvjFF9bDJNk0WxH3Xerr4H3v/VCiRVshEDl3BZVekbMMmdRe+TOPyc8AOLd9IAL2VfVVD/T0rmCHk7Pw7DQjI96mwyeXhE7f4g0WG5UT5Pxxm0Rzy7IrYnEaaVDs7dkZUt952M6qWlHfTwCQDcXJhZfLiXoMwIDAQAB" . "WLVOrl0yaLRFGeCB1UOR4Wrm+fm7lP8lY8AG4l7/AJ45lQ9X1Ft47iUBlrTBn4DtLkS6zEoRy3nwMMii8tXT5FIsh/cagkWY+dg/ncdd5Vvl0jvS7oWLInRTPvodCvN2Cic79azzzymOThWvu4yQFnM0uqHxYA4Cx1SCBdshY4o=" . . "2023-04-25T04:51:06Z"^^ . . . .