@article{DAN_1978_240_4_a17,
     author = {P. V. Petrashen and F. N. Chukhovskii and I. L. Shul'pina},
     title = {Solution of the problem of {X-ray} projection topogram calculation},
     journal = {Doklady Akademii Nauk},
     pages = {836--838},
     publisher = {mathdoc},
     volume = {240},
     number = {4},
     year = {1978},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1978_240_4_a17/}
}