Monge, R., D. Utzinger, and M. L. Arias. “Incidence Al <i>Listeria menocytogenes</i> In Pasteurized Ice Cream and Soft Cheese in Costa Rica, 1992”. Revista De Biología Tropical, vol. 42, no. 1-2, Aug. 1994, pp. 327–328, https://revistas.ucr.ac.cr/index.php/rbt/article/view/23204.