Muñoz-Márquez, Ezequiel. “Identification and Natural Colonization of Mycorrhizal Arbuscular Fungi in Pecan Orchards”. REVISTA TERRA LATINOAMERICANA, vol. 27, no. 4, Dec. 2009, pp. 355-61, https://mail.terralatinoamericana.org.mx/index.php/terra/article/view/1273.