@misc{_[Julian_1953,
 copyright={Rights Reserved - Restricted Access},
 address={Warsaw},
 journal={Zjazd Matematyków Polskich (8 ; 1953 ; Warszawa)},
 howpublished={online},
 year={1953},
 title={[Julian Perkal i Alfréd Rényi] [Dokument ikonograficzny]},
}