@book{Jerzak:2012,
author
=
"L.Jerzak",
title
=
"International Studies of Sparrows, ISSN: 1734-624X",
publisher
=
"University of Zielona Góra",
address
=
"Zielona Góra",
year
=
"2012",
volume
=
"Vol. 36",
}