@article{DAN_1986_287_1_a13,
     author = {A. M. Fedotov and O. V. Levchuk},
     title = {Optimal estimates of linear functionals of solutions of operator},
     journal = {Doklady Akademii Nauk},
     pages = {63--66},
     publisher = {mathdoc},
     volume = {287},
     number = {1},
     year = {1986},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1986_287_1_a13/}
}