References
- Abrahams , A.D. and Parsons , A.J. 1987 . Identification of strength equilibrium rock slopes: further statistical considerations . Earth Surface Processes and Lnndforms , 12 : 631 – 635 .
- Ahnert , F. 1976 . Brief description of a comprehensive three-dimensional process-response model of land-form development . Zeitschrijt für Geomorphologie. Supp , 25 : 29 – 49 .
- Bakker , J.P. and Le Heux , J.W.N. 1946 . Projective-geometric treatment of O. Lehmann's theory of transformation of steep mountain slopes . Koninklijke Nederlandsche Akademie van Wetenschappen , B49 : 533 – 547 .
- Bakker , J.P. and Le Heux , J.W.N. 1952 . A remarkable new geomorphological law . Koninklijke Nederlandsche Akademie van Wetenschappen , B52 : 399 – 410 . 544 – 571 .
- Beckedahl , H.R. 1987 . Rock mass strength and landscape development on the Vredefort collar zone , Johannesburg : University of the Witwatersrand . unpublished M.Sc. dissertation
- Cotton , C.A. and Wilson , A.T. 1971 . Pared-down landscapes in Antarctica . Earyh Science Journal , 5 : 1 – 15 .
- Davis , W.M. 1899 . The geographical cycle . Geographical Journal , 14 : 481 – 504 .
- Davis , W.M. 1902 . Base-level, grade and peneplain . Journal of Geology , 10 : 77 – 111 .
- Fair , T.J.D. 1947 . Slope form and development in the interior of Natal. South Africa . Transactions. Geological Society of South Africa , 50 : 105 – 119 .
- Fair , T.J.D. 1948 . Hillslopes and pediments in the semi-arid Karoo . South African Geographical Journal , 30 : 71 – 82 .
- King , LC. 1953 . Canons of landscape evolution . Bulletin. Geological Society of America , 64 : 721 – 752 .
- King , L.C. 1957 . The uniformitarian nature of hillslopes . Transactions, Edinburgh Geological Society , 17 : 81 – 102 .
- Lehmann , O. 1933 . Morphologische Theorie der Verwitterung von Steinschlagwäden . Vieneljahrsschrijt Naturforschenden Gessellschajt. Zürich , 78 : 83 – 126 .
- Melville , N. 1987 . Slope development at Kamdeboo in the semi-krid eastern Karoo, unpublished Honours research paper, Department of Geography and Environmental Studies , Johannesburg : University of the Witwatersrand .
- Moon , B.P. 1984 . The forms of rock slopes in the Cape fold mountains . South African Geographical Journal , 66 : 16 – 31 .
- Moon , B.P. 1986 . “ Controls on the form and development of rock slopes in fold terrain ” . In Hillslope Processes , Edited by: Abrahams , A.D. 225 – 243 . Boston : The Binghampton Symposia in Geomorphology, International Series No. 16. Allen and Unwin .
- Moon , B.P. and M , Munro-Perry. P. 1988 . Slope development on the qarens Sandstone Formation in the northeastern Orange Free State . South African Geographical Journal , 70 : 57 – 68 .
- Moon , B.P. and Selby , M.J. 1983 . Rock mass strength and scarp forms in southern Africa . Geografiska Annaler , 65A : 135 – 145 .
- Munro-Perry , P.M. 1989 . Slope form and development in the northeastern Orange Free State. , Johannesburg : University of the Witwatersrand . unpublished M.sc. dissertation
- Ollier , C.D. and Marker , M.E. 1985 . The Great Escarpment of southern Africa . Zeitschrift für Geomorphologie , 54 : 37 – 56 .
- Penck , W. 1924 . Die Morphologische Analyse: ein Kapitel der physikalischen Geologie , Stuttgart : Engelhorns . English translation by Czech H. and Boswell, K.C., 1953: Morphological Analysis of LAndforms. Macmillan. London
- Savigear , R.A.G. 1952 . Some observations on slope development in south Wales . Transactions, Institute of British Geographers , 18 : 31 – 51 .
- Schmidt , K.-H. 1989 . The significance of scarp retreat for Cenozoic landform evolution on the Colorado Plateau. U.S.A . Earth Surface Processes and Landforms , 14 : 93 – 105 .
- Schumm , S.A. 1956 . The role of creep and rainwash on the retreat of badland slopes . American Journal of Science , 254 : 693 – 706 .
- Selby , M.J. 1974 . Slope evolution in an Antarctic oasis . New Zealand Geographer , 30 : 18 – 34 .
- Selby , M.J. 1980 . A rock mass strength classification for geomorphic purposes: with tests from Antarctica and New Zealand . Zeitschrift für Geomorphologie , 24 : 31 – 51 .
- Selby , M.J. 1982 . Controls on the stability and inclinations of hill-slopes formed on hard rock . Earth Surface Processes and Landforms , 7 : 449 – 467 .
- Young , A. 1972 . Slopes , London : Longman .