@article{DAN_1964_157_4_a20,
     author = {L. A. Vasil'ev},
     title = {Phase difference in the break of a plane wave front, as determined by the shadow diffraction method},
     journal = {Doklady Akademii Nauk},
     pages = {830--833},
     publisher = {mathdoc},
     volume = {157},
     number = {4},
     year = {1964},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1964_157_4_a20/}
}