M. Cornea, C. Anderson, and C. Tsen. ICSOFT (Selected Papers), volume 10 of Communications in Computer and Information Science, page 97-109. Springer, (2006)
M. Anderson. Process Safety and Environmental Protection (Transactions of the
Institution of Chemical Engineers, Part B), 83 (B2):
109--116(March 2005)
C. Kirchner, H. Kirchner, and A. Santana. WWV, DSIC-II/03/05, page 139-151. Departamento de Sistemas Informaticos y Computacion, Universidad Politecnica de Valencia, (2005)