@article{Czechowski:2009,
author
=
"P.Czechowski and G.Jędro and M.Bocheński",
title
=
"Oknówka Delichon urbicum wyprowadza lęg w gnieździe dymówki Hirundo rustica",
journal
=
"Notatki Ornitologiczne",
volume
=
"T. 50",
number
=
"z. 1",
pages
=
"59--62",
year
=
"2009",
}