@misc{_Guttenberg”,
 howpublished={online},
 publisher={Mockwa : W. O Kydinovym’},
 language={rus},
 type={książka},
 title={Guttenberg” piervyj izobr’tatiel’ knigopecatania},
 keywords={Guttenberg, Jan (1397-1468), Biografie - 14-15 w.},
}