TY  - JOUR
AU  - M. Ya. Zhitomirskii
TI  - Normal forms of germs of two-dimensional distributions in $\mathbb{R}^4$
JO  - Funkcionalʹnyj analiz i ego priloženiâ
PY  - 1990
SP  - 81
EP  - 82
VL  - 24
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/FAA_1990_24_2_a10/
LA  - ru
ID  - FAA_1990_24_2_a10
ER  -