@article{Borowiecki:2009,
author
=
"M.Borowiecki and E.Drgas-Burchardt",
title
=
"Classes of chromatically unique graphs",
journal
=
"Discrete Mathematics",
volume
=
"Vol. 111",
number
=
"no 1-3",
pages
=
"71--75",
year
=
"1993",
}