Rivero-Diaz, Iris V., Kim, Kwang-Jae (2003), "Analysis of Fuzzy Regression for Modeling Shelf-Life of Gun Propellants," Proceedings of the Sixth U.S. Army Conference on Applied Statistics, (Barry A. Bodt, Edward J. Wegman, eds.), ACAS00/Rivero-Diaz/Rivero-Diaz.pdf