Guimarães, C. M.; Brunini, O.; Stone, L. F. Adaptation of Common Bean (Phaseolus Vulgaris L.) to Drought. I. Root Density and Root Efficiency. PAB 1996, 31 (6), 393-399. https://doi.org/10.1590/S1678-3921.pab1996.v31.4497.