Collaborative Virtual Environments Used in the Design of Pollution Control Systems. - Darin Diachin; Lori A. Freitag; Daniel Heath; Jim Herzog; William Michels; Paul E. Plassmann (Int. J. High Perform. Comput. Appl., 1996)

Symmetric and Alternating Groups Generated by a Full Cycle and Another Element. - Daniel Heath; I. M. Isaacs; John Kiltinen; Jessica Sklar (Am. Math. Mon., 2009)