@article{Osiejuk:2009,
author
=
"T.Osiejuk and J.Grzybek and P.Tryjanowski",
title
=
"Song structure and repertoire sharing in the Tawny Pipit Anthus campestris in Poland",
journal
=
"Acta Ornithologica",
volume
=
"Vol. 42",
number
=
"no 2",
pages
=
"157--165",
year
=
"2007",
}