@misc{Eisen2018,
  author    = {Roland Eisen},
  title     = {[Nachruf] Ulrich Peter Ritter},
  booktitle = {UniReport / Goethe-Universit{\"a}t Frankfurt},
  volume    = {51},
  number    = {1},
  institution = {Wirtschaftswissenschaften},
  type      = {contributiontoperiodical},
  pages     = {22 -- 22},
  year        = {2018},
}