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A statistical model for the dynamics between two fuzzy states: Theory and an application to poverty analysis
Betti, G., (2004)
Measuring poverty in the countries in transition via TFR method : the case of Poland in 1990 - 1991
Dagum, Camilo, (1994)
A "totally" fuzzy and relative approach to the multidimensional analysis of poverty
Cheli, Bruno, (1995)