Antiferromagnetic Ising spin glass competing with BCS pairing interaction in a transverse field S. G. Magalhães, F. M. Zimmer, C. J. Kipper and E. J. Calegari Eur. Phys. J. B, 52 2 (2006) 209-218 Published online: 07 July 2006 DOI: 10.1140/epjb/e2006-00281-y