TY  - JOUR
AU  - V. P. Maslov
AU  - I. A. Shishmarev
TI  - $T$-product of hypoelliptic operators
JO  - Itogi Nauki i Tekhniki. Seriya Sovremennye Problemy Matematiki. Noveishie Dostizheniya
PY  - 1977
SP  - 137
EP  - 197
VL  - 8
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/INTD_1977_8_a2/
LA  - ru
ID  - INTD_1977_8_a2
ER  -