Approximation of first-passage-time densities for diffusion processes This package contains several functions for an efficient approximation of first-passage-time densities for diffusion processes based on the First-Passage-Time Location (FPTL) function. Software Juan J. Serrano-Pérez <jjserra@ugr.es> Patricia Román-Román, Juan J. Serrano-Pérez and Francisco Torres-Ruiz. GPL-2 2011-10-05 application/tgz http://CRAN.R-project.org/package=fptdApprox