@article{DE_1976_12_1_a10,
     author = {I. N. Lanin},
     title = {On a priori estimates for the {Tricomi} and the {Dirichlet} problem for a certain equation with degeneracy of the type and of the order},
     journal = {Differencialʹnye uravneni\^a},
     pages = {89--96},
     publisher = {mathdoc},
     volume = {12},
     number = {1},
     year = {1976},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1976_12_1_a10/}
}