Landslides = Glissements de terrain: proceedings of the 5. International Symposium on Landslides: 10-15 July 1988, Lausanne. Ed.: Christophe Bonnard. Vol. 1-3.

Holm Jakobsen, B. (1989). Landslides = Glissements de terrain: proceedings of the 5. International Symposium on Landslides: 10-15 July 1988, Lausanne. Ed.: Christophe Bonnard. Vol. 1-3. Geografisk Tidsskrift, 89. Hentet fra https://tidsskrift.dk/geografisktidsskrift/article/view/44749