@article{SM_1988_59_2_a12,
     author = {Yu. A. Alkhutov and I. T. Mamedov},
     title = {The first boundary value problem for nondivergence second order parabolic equations with discontinuous coefficients},
     journal = {Sbornik. Mathematics},
     pages = {471--495},
     publisher = {mathdoc},
     volume = {59},
     number = {2},
     year = {1988},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1988_59_2_a12/}
}