Ishchukova, N., and L. Smutka. “REVEALED COMPARATIVE ADVANTAGE : PRODUCTS MAPPING OF THE RUSSIAN AGRICULTURAL EXPORTS IN RELATION TO INDIVIDUAL REGIONS”. Acta Scientiarum Polonorum. Oeconomia, vol. 13, no. 1, Mar. 2014, pp. 45-61, https://aspe.sggw.edu.pl/article/view/508.