at Tübingen University Faculty of Law in 1967. His doctoral thesis on "Die Überwindung der Rechtsfolgen des Formmangels im Rechtsgeschäft nach deutschem, schweizerischem und türkischem Recht" ("Overcoming the legal consequences of the lack of form in legal transactions under German, Swiss and Turkish law") was published as a book by Mohr Siebeck Verlag in Germany the next year.
