T. Benedetti, Z. I. Antoniolli, E. M. N. Giracca, and R. B. Steffen, “DIVERSITY OF ARBUSCULAR MYCORRHIZAL FUNGI IN MAIZE FOLLOWING DIFERENT KIND OF WINTER COVERING PLANT SPECIES”, Rev. Ciênc. Agrovet., vol. 4, no. 1, pp. 44–51, Jan. 2005.