Traditional Architecture and Art on Nias, Indonesia Alain Viaro, Andrea Rieger-Jandl, Arlette Ziegler, Bente Wolff, Christian Warta, Dominik Bonatz, Erich Lehner, Ingo Kennerknecht, Jani Kuhnt-Saptodewo, Jesper Kurt Nielsen, Johannes M Hämmerle, Peter Fattinger, Petra Gruber, Reinhold Mittersackschmöller, Ulrike Herbig, Uwe Hummel, Wolfgang Marschall