@article{RM_1971_26_4_a2,
     author = {T. Ya. Azizov and I. S. Iokhvidov},
     title = {Linear operators in {Hilbert} spaces with $G$-metric},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {45--97},
     publisher = {mathdoc},
     volume = {26},
     number = {4},
     year = {1971},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_1971_26_4_a2/}
}