Gubanova, Y. “Mutation Types and Frequency in Nigella Damascena L. In the М2 and M3 Generation, Using Ethyl Methanesulfonate, Nitrosomethylurea and a New Derivative of Dimethylsulfate, DG-2”. Agricultural Science and Practice, Vol. 9, no. 3, Apr. 2023, pp. 49-63, doi:10.15407/agrisp9.03.049.