1. W.R. Storkman: Masters Thesis, University of Illinois, at Urbana-Champaign, Urbana, IL, 1990.
2. A. Moitra: Ph.D. Thesis, Urbana-Champaign, Urbana, IL, 1993, p. 217.
3. H. Zhu: Ph.D. Thesis, Urbana-Champaign, Urbana, IL, 1996, p. 132.
4. J.-C.T. Parkman: Master’s Thesis, UIUC, Urbana, IL, 2000, p. 139.
5. W.R. Storkman and B.G. Thomas: in Modeling of Casting and Welding Processes, A.G. Giamei and G.J. Abbaschian, eds., Engineering Foundation, Palm Coast, FL, 1988, vol. 4, pp. 287–97.