Bell, « Floods and Landslides in Natal and Notably the Greater Durban Region, September 1987: A Retrospective View », Environmental & Engineering Geoscience, vol. xxxi, no 1, , p. 59–74 (DOI10.2113/gseegeosci.xxxi.1.59, lire en ligne)
geoscienceworld.org
pubs.geoscienceworld.org
Bell, « Floods and Landslides in Natal and Notably the Greater Durban Region, September 1987: A Retrospective View », Environmental & Engineering Geoscience, vol. xxxi, no 1, , p. 59–74 (DOI10.2113/gseegeosci.xxxi.1.59, lire en ligne)