@misc{Tatarkiewicz_Krzysztof._Phot._National_1950-1951,
 author={Tatarkiewicz, Krzysztof. Phot.},
 copyright={Rights Reserved - Restricted Access},
 address={Cracow},
 journal={National Institute of Mathematics in Cracow},
 howpublished={online},
 year={1950-1951},
 title={National Institute of Mathematics in Cracow},
}