Ângela de F. B. Abreu, M. A. P. Ramalho, J. B. dos Santos, and L. A. Martins, “Genetic gain in the common bean breeding program performed at the south and upper Paranaiba regions of Minas Gerais state in the seventies and eighties”, PAB, vol. 29, no. 1, pp. 01–91, Jan. 1994.