The Laplace Transform

(1945). What is the Laplace Transform? The American Mathematical Monthly: Vol. 52, No. 8, pp. 419-425.

[1]  D. Widder,et al.  The Laplace Transform , 1943, The Mathematical Gazette.

[2]  Gustav Doetsch.  Theorie und Anwendung der Laplace-Transformation , 1937 .