Costa Dutra, V., Kawa, H. e Tricai Cavalini, L. (2010) “Analysis of the medicine sales on the Internet: the case of the phosphodiesterase-5 inhibitors”, Journal of Health Informatics. Brasil, 2(4). Disponível em: https://www.jhi.sbis.org.br/index.php/jhi-sbis/article/view/110 (Acessado: 4 maio 2025).