1. Bateman Manuscript Project, Tables of integral transforms, Vol. 1, McGraw-Hill, New York, 1953.
2. \bysame, Higher transcendental functions, Vol. 2, McGraw-Hill, New York, 1953.
3. Gaussian processes and generalized Schroedinger equations;Beekman, John A.;J. Math. Mech.,1965
4. Recurrence times for the Ehrenfest model;Bellman, Richard;Pacific J. Math.,1951
5. The generalized heat flow equation and a corresponding Poisson formula;Cameron, R. H.;Ann. of Math. (2),1954