Education
Doctor of Philosophy, University of Illinois, 1981.
Doctor of Philosophy, University of Illinois, 1981.
Professor of architectural history University of Illinois, Urbana-Champaign, Illinois, since 1982. Co-director of restoration Zeyrek Camii, Istanbul, Turkey, since 1997.
Member of International Center for Medieval Art (director 1999—2003), United States National Committee for Byzantine Studies (president since 2002).