Filho, Israel Alexandre Pereira, José Carlos Cruz, and Magno Antonio Patto Ramalho. 1991. “Productivity and Ear Index of Three Maize Cultivars in Intercropping Systems With Common Bean”. Pesquisa Agropecuaria Brasileira 26 (5):745-51. https://doi.org/10.1590/S1678-3921.pab1991.v26.3399.