found: Einführung in das bürgerliche Recht, 1986:title page (Gerhard Otte) title page verso (Professor, Universität Bielefeld; he is a judge of the Oberlandesgericht Hamm)
found: German Wikipedia, viewed December 8, 2022(Gerhard Otte; born April 13, 1935, in Hamm, Westfalen; German jurist and professor at the Universität Bielefeld; obtained his doctorate in 1962 at the Universität Münster)
found: Deutsche Nationalbibliothek online catalog, viewed December 9, 2022(authorized access point: Otte, Gerhard; other data in authority record: professor of legal history at the Universität Bielefeld; born 1935)