Exact and Asymptotic Solutions for the Time-Dependent Problem of Collective Ruin I. - Charles Knessl; Craig Steven Peters (SIAM J. Appl. Math., 1994)

Exact and Asymptotic Solutions for the Time-Dependent Problem of Collective Ruin II. - Charles Knessl; Craig Steven Peters (SIAM J. Appl. Math., 1996)