Eroh and Oellermann defined BRR(G1, G2) as the smallest N such that any edge coloring of the complete bipartite graph KN,N contains either a monochromatic G1 or a multicolored G2. We restate the problem of determining BRR(K1, , Kr,s) in matrix form and prove estimates and exact values for several choices of the parameters. Our general bound uses F
Paul N. Balister, András Gyárf&aacut