@article{articlea0981056,
title   = {Social interactions, product differentiation and discontinuity of demand},
author = {Prado, Fernando Pigeard de Almeida and Belitsky, Vladimir and Ferreira, Alex Luiz},
year = {2012},
doi = {10.1016/j.jmateco.2011.09.003},
journal   = {Journal of Mathematical Economics}
}