@article{giachetti_young_roggatz_eversheim_perrone_1997, title={A methodology for the reduction of imprecision in the engineering process}, volume={100}, DOI={10.1016/S0377-2217(96)00290-1}, number={2}, journal={European Journal of Operational Research}, author={Giachetti, R. E. and Young, R. E. and Roggatz, A. and Eversheim, W. and Perrone, G.}, year={1997}, pages={277–292} }
 @article{giachetti_young_1997, title={A parametric representation of fuzzy numbers and their arithmetic operators}, volume={91}, DOI={10.1016/S0165-0114(97)00140-1}, number={2}, journal={Fuzzy Sets and Systems}, author={Giachetti, R. E. and Young, R. E.}, year={1997}, pages={185–202} }
 @article{giachetti_young_1997, title={Analysis of the error in the standard approximation used for multiplication of triangular and trapezoidal fuzzy numbers and the development of a new approximation}, volume={91}, DOI={10.1016/S0165-0114(96)00118-2}, number={1}, journal={Fuzzy Sets and Systems}, author={Giachetti, R. E. and Young, R. E.}, year={1997}, pages={1–13} }