The Z_pq×z_p-regular Coverings Of K_3,3

A regular graphΓis called a G-semisymmetric graph, If G is edge-transtive butnot vertex-transtive, for G≤Aut(Γ). In particular,we callΓa semisymmetric graph ifG = Aut(Γ). In this paper, we discuss the Z_pq×Z_p-Regular coverings of K_3,3, and a newinfinite family of semisymmetric graphs as the covering graphs of K_3,3 by Z_pq×Z_p areconstructed, where p and q are primes and p,q≥127.