@article{IVM_1963_2_a0,
     author = {D. Z. Avazashvili},
     title = {On a boundary-value problem in optics},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {3--11},
     publisher = {mathdoc},
     number = {2},
     year = {1963},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1963_2_a0/}
}