1. Boring of the Hosand glacier;Calciati;Boll. Comit. Glac. Ital.,1947
2. Glaciers boring at depths, Service d'études des grandes forces hydrauliques;Flusin;Etudes Glaciologiques,1909
3. Sub-glacier water tapping at Tré-la-Tăte;Waeber;Ann. Ponts et Chaussées, Juillet-Aoŭt,1945