TY  - JOUR
AU  - P. M. Gauthier
TI  - Remarks on a~theorem of~Keldysh--Lavrent'ev
JO  - Trudy Matematicheskogo Instituta imeni V.A. Steklova
PY  - 1985
SP  - 179
EP  - 180
VL  - 40
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/RM_1985_40_4_a31/
LA  - en
ID  - RM_1985_40_4_a31
ER  -