References
- Dieudonne , J. 1971 . Infinitesimal Calculus , Boston : Hougthon Mifflin .
- Riordan , J. 1958 . An Introduction To Combinatorial Analysis , New York : Wiley .
- Widder , D.V. 1941 . The Laplace Transform , Princeton : Princeton University Press .
- Bernstein , S. 1928 . Sur les functions absolument monotones . Acta Math , 52 : 1 – 66 .
- Letac , G. and Mora , M. 1990 . Natural real exponential families with cubic variances . Ann. Statist , 18 : 1 – 37 .
- Seshadri , V. 1993 . The inverse Gaussian distribution , Oxford : Clarendon Press .