@article{RM_1988_43_5_a19,
     author = {E. I. Iokhvidov},
     title = {On~the symmetry of the properties of a~linear operator and its~adjoint},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {233--235},
     publisher = {mathdoc},
     volume = {43},
     number = {5},
     year = {1988},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_1988_43_5_a19/}
}