Solomjak, M.Z. books & textbook
Spectral Theory of Self-Adjoint Operators in Hilbert Space (Mathematics and its Applications, 5)
Birman, Michael Sh. Solomjak, M.Z.
Springer /1987-05-31 Hardcover / 318 Pages
isbn-10: 9027721793 / isbn-13: 9789027721792