Young, R.Morel-Seytoux, H.Simpson, A.2013-11-122013-11-121983Proceedings of the Specialty Conference on Advances in Irrigation and Drainage: Surviving External Pressures, American Society of Civil Engineers Irrigation and Drainage Division, Jackson, Wyoming, USA, July 20-22, 19839780872623705http://hdl.handle.net/2440/80883enCopyright © 1985, ASCEConference paper003000034764353Simpson, A. [0000-0003-1633-0111]