@article{DAN_1978_240_2_a3,
     author = {V. R. Kireitov},
     title = {On some geometric questions of the illumination of surfaces},
     journal = {Doklady Akademii Nauk},
     pages = {261--263},
     publisher = {mathdoc},
     volume = {240},
     number = {2},
     year = {1978},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1978_240_2_a3/}
}