@article{SJVM_2014_17_4_a4,
     author = {E. D. Moskalensky},
     title = {On finding exact solutions of the two-dimensional eikonal equation when the front of the wave propagating in a~medium is a~circle},
     journal = {Sibirskij \v{z}urnal vy\v{c}islitelʹnoj matematiki},
     pages = {363--372},
     publisher = {mathdoc},
     volume = {17},
     number = {4},
     year = {2014},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/SJVM_2014_17_4_a4/}
}