[1]
N. M. Idrus, T. Y. Ting, R. Masri, N. H. Sarmin, and H. I. M. Hassim, “The Generalization of the Exterior Square of a Bieberbach Group with Symmetric Point Group”, Jour. Inform. Math. Sci., vol. 8, no. 4, pp. 295–299, Dec. 2016.