Angelini, Guilherme Augusto Robles, et al. “Mycorrhizal Colonization, Spore Density and Diversity of Arbuscular Mycorrhizal Fungi in Cerrado Soil under No-till and Conventional Tillage Systems”. Semina: Ciências Agrárias, vol. 33, no. 1, Apr. 2012, pp. 115-30, doi:10.5433/1679-0359.2012v33n1p115.