[1] H. Bateman A. Erdélyi: Higher Transcendental Functions. Vol. 2, McGraw-Hill 1953. MR 0058756

[2] I. Černý: Fundamentals of Complex Analysis. Academia, Praha, 1967 (in Czech).

[3] R. Courant D. Hilbert: Methoden der mathematischen Physik. Vol. 1, Berlin, 1931 (Russian translation: GITTL, 1951).

[4] A. A. Dmitriyev: Orthogonal Exponential Functions in Hydrometeorology. Gidrometeoizdat, Leningrad, 1973 (in Russian).

[5] O. Jaroch: Approximation by Exponential Functions. Aplikace matematiky, Vol. 7, No. 4, pp. 249-264, 1962 (in Czech). MR 0158211 | Zbl 0112.08003

[6] O. Jaroch: Recurrence Relations for the Integrals of Orthogonal Exponential Polynomials. Acta Polytechnica - Práce ČVUT, Vol. IV, No. 1, pp. 45-47, 1975 (in Czech).

[7] W. H. Kautz: A procedure for the synthesis of networks for specified transient response. ScD Thesis. Massachusetts Institute of Technology, 1951.

[8] J. H. Laning R. H. Battin: Random Processes in Automatic Control. McGraw-Hill, 1956. MR 0079362

[9] M. A. Lavrentyev B. V. Shabat: Methods of the Theory of Functions of a complex variable. GIFML, Moscow, 1958 (in Russian).

[10] D. F. Tuttle: Network synthesis for prescribed transient response. DSc. Thesis. Massachusetts Institute of Technology, 1948.

[11] E. T. Whittaker G. N. Watson: A Course of Modern Analysis, Vol. II. Cambridge University Press, 1927. MR 1424469