Hemmati, Khatereh, Ebadi, Ali, Khomari, Saeed, Sedghi, Mohammad. “The Response of Pot Marigold Plant (Calendula officinalis L.) to Ascorbic Acid and Brassinosteroid under Drought Stress.” Journal of Crop Ecophysiology, vol. 12, no. 46, 2018, pp. 191-210.