Moser, Nussbaumer, 2004: p. [12] (Burckhardt + Partner)

WWW dict. historique de la suisse July 7, 2005: (Burckhardt Architekten founded in 1951 by Martin Burckhardt, his father Karl August Burckardt, and associate Karl Eckert; known as Burckhardt und Partner since 1968)

Cat. LC