@article{DAN_1961_138_5_a18,
     author = {P. E. Krasnushkin},
     title = {Solution of the boundary-value problem describing the propagation of radio waves around the earth with fundamental 
},
     journal = {Doklady Akademii Nauk},
     pages = {1055--1058},
     publisher = {mathdoc},
     volume = {138},
     number = {5},
     year = {1961},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1961_138_5_a18/}
}