TY - JOUR A1 - Contucci, P. A1 - Gallo, I. A1 - Menconi, G. T1 - Phase transitions in social sciences: twopopulations mean field theory Y1 - 2008 DO - 10.1142/S0217979208039423 JF - International Journal of Modern Physics B VL - 22 IS - 14 ER -