TY  - JOUR
AU  - R. F. Galeeva
AU  - N. I. Chernov
TI  - Conditions of strict exponential growth of the number of cycles in countable directed graphs
JO  - Trudy Matematicheskogo Instituta imeni V.A. Steklova
PY  - 1991
SP  - 172
EP  - 173
VL  - 46
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/RM_1991_46_4_a7/
LA  - en
ID  - RM_1991_46_4_a7
ER  -