1. Über einige Formen der Bergzerreissung;Ampferer;Sitzungsber., Akad. Wiss. Wien, Math.-Naturwiss. Kl., Abt. 1,1939
2. Gravity faulting as a mechanism of topographic adjustment;Beck;N.Z. J. Geol. Geophys.,1968
3. Progressive failure in slopes of overconsolidated plastic clay and clay shales;Bjerrum;Proc. Am. Soc. Civil Eng., J. Soil Mech. Found. Div.,1967
4. Block-glide landslides in the Dakota Group of the Front Range foothills, Colorado;Braddock;Geol. Soc. Am. Bull.,1962
5. Map showing recently active breaks along the San Andreas fault between Point Delgada and Bolinas Bay, California;Brown;U.S. Geol. Surv. Open-File Rep., scale,1970