C. Valdez-Ramírez, S. I. Levy-Tacher, N. S. León-Martínez, D. A. Navarrete-Gutiérrez, and Ángel I. Ortiz-Ceballos, “Chemical and biological soil changes caused by Pteridium aquilinum (L.) Kuhn in areas of influence of the reserve of the biosphere of Calakmul, Campeche”, terra, vol. 38, no. 2, pp. 289–300, Apr. 2020.