"swissBOUNDARIES3D". Federal Office of Topography. Retrieved 16 October 2026.
bevoelkerungsschutz.admin.ch
"Kantonsliste A-Objekte:Ticino"(PDF). KGS Inventar (in German). Federal Office of Civil Protection. 2009. Archived from the original(PDF) on 6 July 2011. Retrieved 12 July 2010.
"Kantonsliste A-Objekte:Ticino"(PDF). KGS Inventar (in German). Federal Office of Civil Protection. 2009. Archived from the original(PDF) on 6 July 2011. Retrieved 12 July 2010.