TY  - JOUR
AU  - I. V. Skrypnik
TI  - Periods of $\mathfrak{A}$-closed forms
JO  - Doklady Akademii Nauk
PY  - 1965
SP  - 772
EP  - 773
VL  - 160
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1965_160_4_a8/
LA  - ru
ID  - DAN_1965_160_4_a8
ER  -