Sylvia A. Hobart On designs related to coherent configurations of type (^{2}^{2}_{4}). [Citation Graph (0, 0)][DBLP] Discrete Mathematics, 1991, v:94, n:2, pp:103-127 [Journal]

Y. H. Peng On the chromatic uniqueness of certain bipartite graphs. [Citation Graph (0, 0)][DBLP] Discrete Mathematics, 1991, v:94, n:2, pp:129-140 [Journal]