@misc{Pucek_Z._Sowa_maj,
 author={Pucek, Z.},
 copyright={Rights Reserved - Free Access},
 howpublished={online},
 year={maj 1967},
 title={Sowa uszata (Asio otus) juv.},
 keywords={Sowa uszata (Asio otus) juv.;},
}