公司法、建设工程法、能源法、合同法、知识产权法、金融法
LL.M., Yale Law School, 1979 / Second State Examination, Higher Regional Court Düsseldorf, 1978 / Dr. jur., University of Münster, Faculty of Law, 1976 / First State Examination. Higher Regional Court Hamm, 1974 / Studies, Freiburg, Lausanne and Münster