@article{articled3bad658,
title   = {Modeling the spreading of HIV in homosexual population with heterogeneous preventive attitude},
author = {Piqueira, José Roberto Castilho and Casado Castaño, Marcos and Monteiro, Luiz Henrique Alves},
year = {2004},
doi = {10.1142/s0218339004001312},
journal   = {Journal of Biological Systems}
}