Semidey, Nelson, and Angel Bosques-Vega. “Yield and Weed Suppression by Pigeon Pea Cultivars in Rotation With Tomato and Pepper”. The Journal of Agriculture of the University of Puerto Rico, vol. 83, no. 1-2, Apr. 1999, pp. 55-64, doi:10.46429/jaupr.v83i1-2.3861.