Marcikić Horvat, Aleksandra, Boris Radovanov, Gheorghe H. Popescu, and Casen Panaitescu. 2019. “A TWO-STAGE DEA MODEL TO EVALUATE AGRICULTURAL EFFICIENCY IN CASE OF SERBIAN DISTRICTS”. Economics of Agriculture 66 (4):965-74. https://doi.org/10.5937/ekoPolj1904965M.