@article{Hoffmann:2009,
author
=
"A.Hoffmann and E.Sidorowicz and L.Volkmann",
title
=
"Extremal bipartite graphs with a unique k-factor",
journal
=
"Discussiones Mathematicae - Graph Theory",
volume
=
"Vol. 26",
number
=
"no 2",
pages
=
"181--192",
year
=
"2006",
}