Juan G. Lazo Lazo Marley B. R. Vellasco Marco Aurélio Cavalcanti Pacheco Determination of Real Options Value by Monte Carlo Simulation and Fuzzy Numbers. 488-496 2005 conf/his/2005 HIS http://doi.ieeecomputersociety.org/10.1109/ICHIS.2005.35 db/conf/his/his2005.html#LazoVP05