map.geo.admin.ch (Map). Swiss Confederation. Retrieved 3 July 2015.
bevoelkerungsschutz.admin.ch
"Kantonsliste A-Objekte". KGS Inventar (in German). Federal Office of Civil Protection. 2009. Archived from the original on 28 June 2010. Retrieved 28 May 2010.
Brandstetter, Die Ortsnamen Schwiz und Stans (1871). Svid- as a first element in Germanic names (such as Svidger, Svidbert, Svidulf) is somewhat rare but well recorded, Förtsemann, Altdeutsches Namenbuch (1856), 1138.
Viktor Wiebel, 'Suittes – Schwyz – Schweiz : Geschichte und Deutung des Namens Schwyz'
Mitteilungen des historischen Vereins des Kantons Schwyz 65 (1972) (retro.seals.ch)
"Kantonsliste A-Objekte". KGS Inventar (in German). Federal Office of Civil Protection. 2009. Archived from the original on 28 June 2010. Retrieved 28 May 2010.