Voir la notice de l'article provenant de la source Math-Net.Ru
@article{MZM_1993_54_4_a1, author = {O. V. Bogopolskii and V. A. Vasil'ev}, title = {On the multiplicity of illumination of convex bodies by point sources}, journal = {Matemati\v{c}eskie zametki}, pages = {12--18}, publisher = {mathdoc}, volume = {54}, number = {4}, year = {1993}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1993_54_4_a1/} }
O. V. Bogopolskii; V. A. Vasil'ev. On the multiplicity of illumination of convex bodies by point sources. Matematičeskie zametki, Tome 54 (1993) no. 4, pp. 12-18. http://geodesic.mathdoc.fr/item/MZM_1993_54_4_a1/