@article{DAN_1986_291_1_a1,
     author = {K. I. Babenko},
     title = {The {Tricomi} problem},
     journal = {Doklady Akademii Nauk},
     pages = {14--19},
     publisher = {mathdoc},
     volume = {291},
     number = {1},
     year = {1986},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1986_291_1_a1/}
}