Invariant Subspaces of Linear Transformations in Hilbert Space, a Survey of 1961 Russian ResultsLouis De Branges · First published 1962 · Latest edition 2018Open the Tome
Square Summable Power SeriesLouis de Branges, James Rovnyak · First published 1966 · Latest edition 2014Open the Tome
Topics in operator theoryErnst Hellinger, Louis De Branges, Gohberg, I., James Rovnyak, L. De Branges, I. Gohberg · First published 1990Open the Tome