On bipartite <i>Q</i>-polynomial distance-regular graphs.

Stefko Miklavic On bipartite <i>Q</i>-polynomial distance-regular graphs. 94-110 2007 28 Eur. J. Comb. 1 http://dx.doi.org/10.1016/j.ejc.2005.09.003 db/journals/ejc/ejc28.html#Miklavic07