1. P. Turán,Eine neue Methode in der Analysis und deren Anwendungen (Budapest, 1953), Akadémiai Kiadó.
2. I. Dancs, On an extremal problem,Acta Math. Acad. Sci. Hung.,9 (1958), pp. 309–313.
3. Vera T. Sós andP. Turán, On some new theorems in the theory of diophantine approximations,Acta Math. Acad. Sci. Hung.,6 (1955), pp. 240–254.
4. $$\left( {\begin{array}{*{20}c} x \\ l \\ \end{array} } \right) = x(x - 1)...(x - l + 1)/l!and\left( {\begin{array}{*{20}c} x \\ 0 \\ \end{array} } \right) = 1$$ .
5. Gauss,Werke, Vol. 3, p. 147.