1. Smith a. A study on the nature and causes of the wealth of nations . Moscow , 1993 . Books 1-3. Pp. 175-176. Smith a. A study on the nature and causes of the wealth of nations. Moscow, 1993. Books 1-3. Pp. 175-176.
2. Cournot A. Mathematical Principles of the Theory of Wealth . New York . 1929 . Cournot A. Mathematical Principles of the Theory of Wealth. New York. 1929.
3. Jevons W.S. Theory of Political Economy . Lst. ed. London. 1871 . – C. 86 – 87. Jevons W.S. Theory of Political Economy. Lst. ed. London. 1871. – C. 86 – 87.
4. Edgeworth F.Y. Mathematical Psychics . London . – 1881 . Edgeworth F.Y. Mathematical Psychics. London. – 1881.
5. Robinson . Economic theory of imperfect competition / trans. from English-M.: Ekonomika. - 1986 . Robinson. Economic theory of imperfect competition / trans. from English-M.: Ekonomika. - 1986.