TY  - JOUR
AU  - V. F. Gaposhkin
TI  - Systems of the form $\{\varphi_k(n_k{x})\}$ equivalent to systems of independent functions
JO  - Trudy Matematicheskogo Instituta imeni V.A. Steklova
PY  - 1967
VL  - 22
IS  - 1
UR  - http://geodesic.mathdoc.fr/item/RM_1967_22_1_a19/
LA  - ru
ID  - RM_1967_22_1_a19
ER  -