O. O. Prieto-Benavides, C. E. Blezaca-Pinargote, W. F. Mora-Silva, F. R. Garcés-Fiallos, F. A. Sabando-Ávila, and P. E. Cedeño-Loja, “Identification of arbuscular mycorrhizal fungi in cocoa agroforestry systems in the Ecuadorian humid tropics”., Agron. Mesoam., vol. 23, no. 2, pp. 233–239, Dec. 2012.