@article{Tryjanowski:2013,
author
=
"P.Tryjanowski and T.Sparks and S.Kuźniak and P.Czechowski and L.Jerzak",
title
=
"Bird Migration Advances More Strongly in Urban Environments",
journal
=
"PLoS ONE",
volume
=
"Vol. 8",
number
=
"iss. 5",
pages
=
"1--6",
year
=
"2013",
}