TY  - JOUR
AU  - A. S. Milevskii
TI  - Similarity transformations and spectral properties of hypoelliptic pseudodifferential operators on a circle
JO  - Funkcionalʹnyj analiz i ego priloženiâ
PY  - 1989
SP  - 71
EP  - 72
VL  - 23
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/FAA_1989_23_3_a13/
LA  - ru
ID  - FAA_1989_23_3_a13
ER  -