@article{MZM_2009_86_2_a9,
     author = {K. B. Sabitov},
     title = {Tricomi {Problem} for a {Mixed} {Parabolic--Hyperbolic} {Equation} in a {Rectangular} {Domain}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {273--279},
     publisher = {mathdoc},
     volume = {86},
     number = {2},
     year = {2009},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2009_86_2_a9/}
}