@article{DAN_1989_309_1_a24,
     author = {P. V. Petrashen and F. N. Chukhovskii},
     title = {Restoration of the phase of an x-ray wave diffracted by a layered},
     journal = {Doklady Akademii Nauk},
     pages = {105--109},
     publisher = {mathdoc},
     volume = {309},
     number = {1},
     year = {1989},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1989_309_1_a24/}
}