P. . Aguilar Mora, J. . Chin Pampillo, and K. . Ruíz Hidalgo, “Use of ‘Pesticide Impact Rating Index’ (PIRI) for evaluating dangers of pesticide use in onion (Allium cepa L.) culture”, Mundo Saude, vol. 38, no. 1, pp. 24–30, Jan. 2014.