TY  - JOUR
AU  - M. A. Shubin
TI  - Essentiality of the spectrum of pseudodifferential operators in the Besicovitch space $B^2(\mathbf{R}^n)$
JO  - Vestnik Moskovskogo universiteta. Matematika, mehanika
PY  - 1982
SP  - 56
EP  - 59
IS  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/VMUMM_1982_5_a15/
LA  - ru
ID  - VMUMM_1982_5_a15
ER  -