Price Watch: Your Amazon Price Tracking Companion. Journal of Pharmaceutical Negative Results, [S. l.], p. 4450–4455, 2022. DOI: 10.47750/5nwkzv74. Disponível em: https://www.pnrjournal.com/index.php/home/article/view/10857.. Acesso em: 17 jun. 2026.