1. I. M. Vinogradov, Selected Works [in Russian], Izd. Akad. Nauk SSSR, Moscow (1952).
2. I. M. Vinogradov, Method of Trigonometric Sums in Number Theory [in Russian], Nauka, Moscow (1971).
3. V. B. Dem'yanov, ?On cubic forms in discretely normed fields,? Dokl. Akad. Nauk SSSR,74 No. 5, 889?891 (1950).
4. V. B. Dem'yanov, ?On the representation of zero by forms of the type $$\sum\limits_{i = 1}^m {a_i x_i ^n }$$ ,? Dokl. Akad. Nauk SSSR,105, No. 2, 203?205 (1955).
5. V. B. Dem'yanov, ?On the representation of the elements of a complete discretely normed field by forms over this field,? Dokl. Akad. Nauk SSSR,105, No. 3, 401?404 (1955).