@article{oai:ynu.repo.nii.ac.jp:00006954, author = {Mizuno, Hirobumi and Sato, Iwao}, issue = {Special}, journal = {Yokohama Mathematical Journal = 横濱市立大學紀要. D部門, 数学}, month = {}, note = {application/pdf, Let $D$ be a connected symmetric digraph, $Z_{p}$ a cyclic group of prime order $p(>2)$ and $¥Gamma$ a group of automorphisms of $D$ . We enumerate the number of $¥Gamma$-isomorphism classes of g-cycic $Z_{p}¥times Z_{p}$-covers of $D$ for any nonunit $g¥in Z_{p}¥times Z_{p}$ .}, pages = {165--182}, title = {ISOMORPHISMS OF SOME CYCLIC ABELIAN COVERS OF SYMMETRIC DIGRAPHS}, volume = {47}, year = {1999} }