@article{DE_2003_39_10_a13,
     author = {M. A. Bimenov and T. Sh. Kal'menov},
     title = {A {Test} for the {Completeness} of the {Root} {Vectors} in the {Tricomi} {Problem}},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1425--1426},
     publisher = {mathdoc},
     volume = {39},
     number = {10},
     year = {2003},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_2003_39_10_a13/}
}