Authors: Miguel Ángel Ballester and Tomasa Calvo
Fuzzy Sets and Systems, Vol. 160, No 14, 1984--1997, January, 2009Authors: Miguel Ángel Ballester and Tomasa Calvo
Fuzzy Sets and Systems, Vol. 160, No 14, 1984--1997, January, 2009© Barcelona Graduate School of Economics. All rights reserved.