@article{DAN_1985_280_1_a17,
     author = {A. Ya. Kazakov},
     title = {The maximum principle in linear transport theory},
     journal = {Doklady Akademii Nauk},
     pages = {78--79},
     year = {1985},
     volume = {280},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1985_280_1_a17/}
}