Atarod, Elham, Siahmarguee, Asiyeh, Alimi, Mahsa. Allelopathic Effects of  Yarrow (Achillea milefolium L.) and Lemon-Verbena (Lippia citriodora Kunth.)  on Germination of Some Weed Species. Semi Annual Journal of Weed Ecology. 2016;3(2):115-126.