Araujo, Fabio Fernando de, et al. “Hybrids and Varieties of Corn Inoculated With Herbaspirillum Seropedicae”. Semina: Ciências Agrárias, vol. 34, no. 3, June 2013, pp. 1043-54, doi:10.5433/1679-0359.2013v34n3p1043.