Document Type : Original Article
nazari,M . (2018). Natural Monopoly. Encyclopedia of Economics, 1(1), 1-4.
nazari,M . "Natural Monopoly", Encyclopedia of Economics, 1, 1, 2018, 1-4.
nazari M. (2018). 'Natural Monopoly', Encyclopedia of Economics, 1(1), pp. 1-4.
M nazari, "Natural Monopoly," Encyclopedia of Economics, 1 1 (2018): 1-4,
nazari M. Natural Monopoly. Encyclopedia of Economics. 2018;1(1):1-4 (In Persian).