@article{ZNSL_1985_147_a17,
     author = {S. A. Yakubov},
     title = {Perturbation of the self-adjoint operator by the subordinated symmetric operator.},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {196--198},
     publisher = {mathdoc},
     volume = {147},
     year = {1985},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1985_147_a17/}
}