Kheirabadi, H., Shahsavani, S., Basafa, M., Gharanjik, S.. “The Amount and Timing of Foliar Urea Application Effect on Maize and Forage Sorghum Proteins.” Journal of Chemical Health Risks, vol. 2, no. 3, 2012, pp. 0-0. 10.22034/jchr.2018.543999