The Spectral Theorem Lecture Notes in Mathematics, nr. 1227 Autor Henry Helson dec 1986 Paperback Preț: 262.16 lei 43-57 zile
Harmonic Analysis The Wadsworth & Brooks/Cole Mathematics Series Autor Henry Helson 25 apr 1991 Paperback Preț: 368.59 lei 43-57 zile
