@book{ 0-026566125, title = {Franz Gertsch}, author = {Gertsch, Franz and Ammann, Jean-Christophe}, editor = {Ronte, Dieter}, editor = {Ammann, Jean-Christophe}, address = {Bern}, publisher = {Benteli}, year = {1986}, isbn = {3716505374}, language = {German}, language = {English}, note = {Text dt. und engl}, url = {http://d-nb.info/206844166/04}, url = {https://katalog.gfzk.de/Record/0-026566125} }