@article{Drgas-Burchardt:2009,
author
=
"E.Drgas-Burchardt",
title
=
"On 3-chromatically unique and 3-chromatically equivalent hypergraphs",
journal
=
"Ars Combinatoria",
volume
=
"Vol. 93",
pages
=
"409--415",
year
=
"2009",
}