وفاق امجد القيسي. “Effect of Aspirin Spraying (Acetyl Salicylic Acid) and Extract of Eucalyptyus Incrassta on Growth and Yield of Pea (Pisum Sativum L.) ”. Journal of Madenat Alelem University College, Vol. 4, no. 1, June 2012, pp. 19-30, http://116.203.176.164/index.php/JMAUC/article/view/248.