Majka, A., and D. Zając. “FACTORS INFLUENCING THE DEVELOPMENT OF NON-AGRICULTURAL BUSINESS ACTIVITIES IN RURAL EASTERN POLAND”. Acta Scientiarum Polonorum. Oeconomia, Vol. 18, no. 1, Mar. 2019, pp. 43-52, doi:10.22630/ASPE.2019.18.1.5.