@article{DAN_1964_159_4_a1,
     author = {V. V. Baklan},
     title = {Variational differential equations and {Markov} processes in {Hilbert} space},
     journal = {Doklady Akademii Nauk},
     pages = {707--710},
     publisher = {mathdoc},
     volume = {159},
     number = {4},
     year = {1964},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1964_159_4_a1/}
}