F. J. de Oliveira, M. A. Varejão-Silva, and M. J. Gomes, “Selection of cowpea agronomic characters using path coeficient analysis”, PAB, vol. 25, no. 7, pp. 1055–1064, Apr. 2014, doi: 10.1590/S1678-3921.pab1990.v25.13553.