@article{DAN_1977_233_3_a4,
     author = {A. I. Ibragimov},
     title = {On the behavior on the boundary of the solution of a linear degenerate equation of second order with continuous coefficients},
     journal = {Doklady Akademii Nauk},
     pages = {281--284},
     publisher = {mathdoc},
     volume = {233},
     number = {3},
     year = {1977},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1977_233_3_a4/}
}