@article{Ławicki:2015,
author
=
"Ł.Ławicki and T.Cofta and S.Beuch and A.Dmoch and A.Sikora and S.Aftyka and P.Czechowski and M.Bocheński and K.Sieczak and S.Mazgaj",
title
=
"Identification and occurrence of hybrids Grey-headed x European Green Woodpecker in Poland",
journal
=
"Dutch birding",
volume
=
"Vol. 37",
pages
=
"215--228",
year
=
"2015",
}