@article{DAN_1968_179_4_a17,
     author = {G. I. Marchuk},
     title = {A contribution to the theory of biorthogonal expansions of the fields of meteorological elements},
     journal = {Doklady Akademii Nauk},
     pages = {832--835},
     publisher = {mathdoc},
     volume = {179},
     number = {4},
     year = {1968},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1968_179_4_a17/}
}