TY  - JOUR
AU  - V. M. Zakalyukin
TI  - Singularities of Contact with $3$-Flags
JO  - Funkcionalʹnyj analiz i ego priloženiâ
PY  - 1999
SP  - 78
EP  - 81
VL  - 33
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/FAA_1999_33_3_a7/
LA  - ru
ID  - FAA_1999_33_3_a7
ER  -