Freitas, Maria Freitas Helena de, and José Osvaldo Siqueira. 1994. “Mycelial Growth of Pre-Germinated Spores of the Endomycorrhizal Fungus Gigaspora Gigantea in Liquid Medium Supplemented With Nitrogenous Organic Compounds”. Pesquisa Agropecuaria Brasileira 29 (5): 751-56. https://doi.org/10.1590/S1678-3921.pab1994.v29.4111.