@article{DAN_1962_142_5_a18,
     author = {\`E. R. Tsekanovskii},
     title = {Model elements of non-selfadjoint operators},
     journal = {Doklady Akademii Nauk},
     pages = {1043--1046},
     publisher = {mathdoc},
     volume = {142},
     number = {5},
     year = {1962},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1962_142_5_a18/}
}