http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Introduction to spectral theory in Hilbert Space
HELMBERG, Gilbert: -- Introduction to spectral theory in Hilbert -- Space. - Amsterdam, London: North-Holland -- Publ.Co.1969. XIII,346 S.mit 31 Fig. 8° -- (North-Holland Series in applied mathema- -- tics and mechanics.6.) -- 1971: 4746 a/gb. -- [Ersatz]
North-Holland Series in applied mathematics and mechanics 6