@article{DAN_1966_166_2_a1,
     author = {M. A. Gol'dman and E. M. Levich},
     title = {On invariant supplementability of certain spaces generated by a linear operator},
     journal = {Doklady Akademii Nauk},
     pages = {267--270},
     publisher = {mathdoc},
     volume = {166},
     number = {2},
     year = {1966},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1966_166_2_a1/}
}