@article{Contucci2008, author = {Contucci, P. and Gallo, I. and Menconi, G.}, title= {Phase transitions in social sciences: twopopulations mean field theory}, year = {2008}, doi = {10.1142/S0217979208039423}, journal = {International Journal of Modern Physics B}, volume = {22}, number = {14}, pages = {1--14}, }