On k-chromatically unique and k-chromatically equivalent hypergraphs.

Ewa Drgas-Burchardt On k-chromatically unique and k-chromatically equivalent hypergraphs. 57-60 2006 24 Electronic Notes in Discrete Mathematics http://dx.doi.org/10.1016/j.endm.2006.06.010 db/journals/endm/endm24.html#Drgas-Burchardt06