@article{DAN_1973_209_1_a11,
     author = {F. O. Porper},
     title = {Estimates of derivatives of the fundamental solution of the {Cauchy} problem in the half-space $t>0$ in the case of special parabolic equations of second order},
     journal = {Doklady Akademii Nauk},
     pages = {50--53},
     publisher = {mathdoc},
     volume = {209},
     number = {1},
     year = {1973},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1973_209_1_a11/}
}