. . . . . "DOI is used to link metadata with data." . . . . "2050-01-01"^^ . "2023-02-28"^^ . . "RSA" . "MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCoKFb7LKlXyBB7BUvjFF9bDJNk0WxH3Xerr4H3v/VCiRVshEDl3BZVekbMMmdRe+TOPyc8AOLd9IAL2VfVVD/T0rmCHk7Pw7DQjI96mwyeXhE7f4g0WG5UT5Pxxm0Rzy7IrYnEaaVDs7dkZUt952M6qWlHfTwCQDcXJhZfLiXoMwIDAQAB" . "AHjGhnnAmQVpxk0PAsrIXAXCHLwZcTXi8UcLKw8r1dnfDS7W8tgPxIbCuwl9ozVuMEf5ZgWMn8k102eeb42Je8IZrP6I1VTn93VXDFQmLJzI8reCY4kgCoXT9D/GWVooXRhtpVR4c3Ha/1y3g13gBJcsZ4pyPRkUNC6LMG8dajw=" . . "2023-07-13T19:25:06Z"^^ . . . .