@article{DAN_1986_291_2_a6,
     author = {N. Yu. Kapustin},
     title = {Existence and uniqueness of the $L_2$-solution of the {Tricomi}},
     journal = {Doklady Akademii Nauk},
     pages = {288--292},
     publisher = {mathdoc},
     volume = {291},
     number = {2},
     year = {1986},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1986_291_2_a6/}
}