1. A. Bowyer, G. Bayliss, R. Taylor, P. Willis, A virtual factory. Int. J. Shape Model. 2(04), 215–226 (1996)
2. E. Lin, I. Minis, D.S. Nau, W.C. Regli, Contribution to Virtual Manufacturing Background Research (University of Maryland, Institute for Systems Research, 1995)
3. V. Marinov, What Virtual Manufacturing is? Part I: Definition. See also URL
bosphorus.eng.emu.edu.tr/vmarinov/VM/VMdef.htm