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nachrichten.ch
Bertozzi, Adeo (29 June 2005). "Abschied von Achille Casanova". Nachrichten.ch (in German). St. Gallen: Vadian.net AG. Archived from the original on 7 July 2011. Retrieved 17 November 2009.
Bertozzi, Adeo (29 June 2005). "Abschied von Achille Casanova". Nachrichten.ch (in German). St. Gallen: Vadian.net AG. Archived from the original on 7 July 2011. Retrieved 17 November 2009.