@misc{Baran_Andrzej_(1948-_)._Feynman,
 author={Baran, Andrzej (1948- ). and Szymona, Jan Jacek.},
 howpublished={online},
 publisher={UMCS},
 language={eng},
 type={artykuł},
 title={Feynman path integration in optics: Numerical example},
 keywords={fizyka},
}