@article{HaenggiTalkner1985,
  author    = {Peter H{\"a}nggi and Peter Talkner},
  title     = {First-passage time problems for non-Markovian processes},
  journal   = {Physical Review A},
  volume    = {32},
  number    = {3},
  pages     = {1934 -- 1937},
  doi       = {10.1103/physreva.32.1934},
  year      = {1985},
}