Goretzki, P., O. Perekhozhuk, T. Glauben, and J.-P. Loy. “Price Discrimination and Market Power in the International Fertiliser Market: Empirical Evidence for Exports from Russia”. Agricultural and Resource Economics: International Scientific E-Journal, Vol. 5, no. 2, June 2019, pp. 5-24, doi:10.51599/are.2019.05.02.01.