Kara, B., F. G. Çelebi, N. Kara, and B. Atar. “Efficiency of Different Nitrogen Forms in Buckwheat (Fagopyrum Esculentum Moench)”. Turkish Journal of Agriculture - Food Science and Technology, vol. 4, no. 6, June 2016, pp. 515-8, doi:10.24925/turjaf.v4i6.515-518.692.