@article{RM_1962_17_6_a3,
     author = {B. E. Veits},
     title = {Some applications of the general theory of bi-orthogonal systems to the study of symmetrizable operators},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     publisher = {mathdoc},
     volume = {17},
     number = {6},
     year = {1962},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/RM_1962_17_6_a3/}
}