@article{DAN_1970_194_2_a8,
     author = {P. S. Soltan},
     title = {Illumination from within for unbounded convex bodies},
     journal = {Doklady Akademii Nauk},
     pages = {273--274},
     publisher = {mathdoc},
     volume = {194},
     number = {2},
     year = {1970},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1970_194_2_a8/}
}