TY  - JOUR
AU  - P. L. Ul'yanov
TI  - Representation of functions by series and classes~$\varphi(L)$
JO  - Trudy Matematicheskogo Instituta imeni V.A. Steklova
PY  - 1972
SP  - 1
EP  - 54
VL  - 27
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/RM_1972_27_2_a0/
LA  - en
ID  - RM_1972_27_2_a0
ER  -