TY  - JOUR
AU  - V. G. Boltyanskii
AU  - P. S. Soltan
TI  - Illumination from within of the boundary of a convex body
JO  - Sbornik. Mathematics
PY  - 1972
SP  - 87
EP  - 94
VL  - 16
IS  - 1
UR  - http://geodesic.mathdoc.fr/item/SM_1972_16_1_a6/
LA  - en
ID  - SM_1972_16_1_a6
ER  -