"Kantonsliste A-Objekte". KGS Inventar (in German). Federal Office of Civil Protection. 2009. Archived from the original on 28 June 2010. Retrieved 25 April 2011.
meteoswiss.admin.ch
"Average Values-Table, 1961-1990" (in German, French, and Italian). Federal Office of Meteorology and Climatology MeteoSwiss. Archived from the original on 27 June 2009. Retrieved 8 May 2009.
"Kantonsliste A-Objekte". KGS Inventar (in German). Federal Office of Civil Protection. 2009. Archived from the original on 28 June 2010. Retrieved 25 April 2011.
"Average Values-Table, 1961-1990" (in German, French, and Italian). Federal Office of Meteorology and Climatology MeteoSwiss. Archived from the original on 27 June 2009. Retrieved 8 May 2009.