@article{AlvarezGrima1999FuzzyModelPrediction,
author  =   "M. Alvarez Grima and R. Babu\v{s}ka",
title   =   "Fuzzy model for the prediction of unconfined compressive strength of rock samples",
journal =   "International Journal of Rock Mechanics and Mining Sciences",
volume  =   36,
number  =   3,
pages   =   "339--349",
year    =   1999
}