Ordinance on the Protection of Amphibian Spawning Sites of National Importance / Verordnung über den Schutz der Amphibienlaichgebiete von nationaler Bedeutung (Amphibienlaichgebiete-Verordnung, AlgV) / Ordonnance sur la protection des sites de reproduction de batraciens d'importance nationale (Ordonnance sur les batraciens, OBat) / Ordinanza sulla protezione dei siti di riproduzione di anfibi di importanza nazionale (Ordinanza sui siti di riproduzione degli anfibi, OSRA) of 2001-06-15, SR/RS 451.34 (E·D·F·I), art. pp1 (E·D·F·I)
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 25 April 2011.
"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.