Feizollah, J., and H. Aminpanah. “Effects of Planting Distance and Weeding Regime on Green Bean (Phaseolus Vulgaris L.) Growth and Yield”. Revista De La Facultad De Agronomía De La Universidad Del Zulia, Vol. 33, no. 3, July 2017, pp. 325-4, https://produccioncientificaluz.org/index.php/agronomia/article/view/27206.