G. Aleksiev1*, D. Doncheva2 1Department of Management, Faculty of Economics, Trakia University, 6000 Stara Zagora, Bulgaria 2Department of Economics, Faculty of Economics, Trakia University, 6000 Stara Zagora, Bulgaria (Manuscript received 25 May 2022; accepted for publication 31 July

R.G. Isonguyo*, M.A Ojo, A.J. Jirgi, E.S. Yisa Department of Agricultural Economics and Farm Management, Federal University of Technology, Minna, Nigeria (Manuscript received 5 October 2020; accepted for publication 18 February 2021) Abstract. Non-parametric analysis of total factor p