Bezerra, Antônio Aécio de Carvalho, Francisco José Alves Fernandes Távora, Francisco Rodrigues Freire Filho, and Valdenir Queiroz Ribeiro. 2010. “Canopy and Yield Characteristics of a Bunch-Type Cowpea under Different Population Densities”. Pesquisa Agropecuaria Brasileira 44 (10):1239-45. https://doi.org/10.1590/S1678-3921.pab2009.v44.1442.