M. Domine, FIRST PASSAGE TIME DISTRIBUTION OF A WIENER PROCESS WITH DRIFT CONCERNING 2 ELASTIC BARRIERS, Journal of Applied Probability, 33(1), 1996, pp. 164-175
We solve the Fokker-Planck equation for the Wiener process with drift
in the presence of elastic boundaries and a fixed start point. An expl
icit expression is obtained for the first passage density. The cases w
ith pure absorbing and/or reflecting barriers arise for a special choi
ce of a parameter constellation. These special eases are compared with
results in Darling and Siegert [5] and Sweet and Hardin [15].