03 - Suisse sud-ouest. Swiss National Map 1:200 000 - Switzerland on four sheets. Federal Office of Topography, swisstopo, Swiss Federal Department of Defence, Civil Protection and Sport. 2009 [17 April 2014]. (原始内容存档于2014-04-11).
03 - Suisse sud-ouest. Swiss National Map 1:200 000 - Switzerland on four sheets. Federal Office of Topography, swisstopo, Swiss Federal Department of Defence, Civil Protection and Sport. 2009 [17 April 2014]. (原始内容存档于2014-04-11).