@article{DAN_1977_235_5_a3,
     author = {E. G. D'yakonov and M. Yu. Orekhov},
     title = {On the minimization of computational work in eigenvalue problems},
     journal = {Doklady Akademii Nauk},
     pages = {1005--1008},
     year = {1977},
     volume = {235},
     number = {5},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1977_235_5_a3/}
}