References
- Esscher , F. 1932 . On the probability function in the collective theory of risk . Skand. Aktuar. Tidskr. , and Section IV below
- Pesonen , E. 1964 . A modification of the Esscher method . Skand. Aktuar Tidskr. ,
- Kauppi , L. and Ojantakanen , P. 1964 . “ Approximations of the generalised Poisson function ” . In A.S.T.I.N. Colloquium in Arnhem (to be published in the A.S.T.I.N. Bulletin)