. . . . . "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" . "Hv+ZYoB815fV1+nWavAI1QZ8NMfG3TyoPEAD261TX6J5qCViY31+HF222xsbCjqxG3vhx0J/echeGv+Jbdw2D5JA9KjLFmes1NXcwIgyBHaxP6ITPrvIeLGV5UBlnK+dn036w+apoQzoT5TAmru5AnTzCbf8AKmFo7jaB3hIizg=" . . "2023-04-25T06:46:30Z"^^ . . . .