@article{SM_1971_14_4_a5,
     author = {Yu. L. Shmul'yan},
     title = {Representation of {Hermitian} operators with improper scale subspace},
     journal = {Sbornik. Mathematics},
     pages = {554--564},
     publisher = {mathdoc},
     volume = {14},
     number = {4},
     year = {1971},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1971_14_4_a5/}
}