N. I. Akhiezer has written:
'Theorie der linearen Opteratoren im Hilbert-Raum' --
subject(s): Hilbert space
'Theorie der linearen Operatoren im Hilbert-Raum' -- subject(s):
Hilbert space, Linear operators, Functional analysis
'Lectures on integral transforms' -- subject(s): Integral
transforms
'Elements of the theory of elliptic functions' -- subject(s):
Elliptic functions