TY  - JOUR
AU  - Z. A. Steingrad
TI  - Harmonic systems of reference and Zelmanov's monadic formalism
JO  - Doklady Akademii Nauk
PY  - 1974
SP  - 1296
EP  - 1299
VL  - 217
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1974_217_6_a16/
LA  - ru
ID  - DAN_1974_217_6_a16
ER  -