[1] V. Jarník: Integrální počet. Praha 1955.
[2] L. Tonelli: Serie trigonometriche. Bologna 1928.
[3] S. Bochner: Vorlesungen über Fourierische Integrale. Leipzig 1932. (There are also the English and Russian translations: Lectures on Fourier Integrals, Princeton, 1959; Лeкции oб интeгpaлax Фypьe, Moscow 1962.)
[4] S. Bochner K. Chandrasekharan:
Fourier Transforms. Princeton 1949.
MR 0031582