Vullkh B., . (1976). A Brief Course in the Theory of Functions of a real variable. Moscow: M I R Publishers.
Vullkh B.Z, . 1976. A Brief Course in the Theory of Functions of a real variable. Moscow: M I R Publishers.
Vullkh B.Z, . A Brief Course in the Theory of Functions of a real variable. Moscow: M I R Publishers. 1976.
