@article{AA_2010_22_6_a1,
     author = {B. V. Budaev},
     title = {How should we improve the ray-tracing method?},
     journal = {Algebra i analiz},
     pages = {43--49},
     publisher = {mathdoc},
     volume = {22},
     number = {6},
     year = {2010},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AA_2010_22_6_a1/}
}