TY  - JOUR
AU  - N. V. Ilyushechkin
TI  - On a certain class of smooth matrix-valued functions
JO  - Trudy Matematicheskogo Instituta imeni V.A. Steklova
PY  - 1985
SP  - 223
EP  - 224
VL  - 40
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/RM_1985_40_1_a15/
LA  - en
ID  - RM_1985_40_1_a15
ER  -