@article{INTO_2019_167_a1,
     author = {Zh. A. Balkizov},
     title = {On a priori estimates of solutions of the {Tricomi} problem for a certain mixed-type second-order equation},
     journal = {Itogi nauki i tehniki. Sovremenna\^a matematika i e\"e prilo\v{z}eni\^a. Temati\v{c}eskie obzory},
     pages = {14--20},
     publisher = {mathdoc},
     volume = {167},
     year = {2019},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/INTO_2019_167_a1/}
}