. . . . . "No generic system was available, and because of the ammount of metadata records DOI's are not feasible. Therefore dedicated PID-CDI identifier solution." . . . . "2021-12-31"^^ . "2021-01-01"^^ . . "RSA" . "MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCoKFb7LKlXyBB7BUvjFF9bDJNk0WxH3Xerr4H3v/VCiRVshEDl3BZVekbMMmdRe+TOPyc8AOLd9IAL2VfVVD/T0rmCHk7Pw7DQjI96mwyeXhE7f4g0WG5UT5Pxxm0Rzy7IrYnEaaVDs7dkZUt952M6qWlHfTwCQDcXJhZfLiXoMwIDAQAB" . "BmyOG+lZ7P6LqQ5IGd+aoGl28mIfz1efWwb/1+iqPVL5vEvO6+d+zbagsV/6tCe93XZKQ/f29zkjlXNW9e4FTyida1c9MJXwmdHjjlaK2eihBjtWLtUS8KdXT6qy60QetzwPxTc+ekmuNhkcTrqcBruavakS5TVyzio4/ur1YcU=" . . "2024-01-22T19:04:13Z"^^ . . . .