TY  - JOUR
AU  - V. I. Arnol'd
TI  - Singularities of systems of rays
JO  - Trudy Matematicheskogo Instituta imeni V.A. Steklova
PY  - 1983
SP  - 87
EP  - 176
VL  - 38
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/RM_1983_38_2_a1/
LA  - en
ID  - RM_1983_38_2_a1
ER  -