1. 1) Thomas W. Gardner : Experimental study of knickpoint and longitudinal profile evolution in cohesive, homogeneous material, 1982.
2. 2) Thanos Papanicolaus : The effect of headcut and knickpoint propagation on bridges in Iowa, 2008.
3. 3) Kristen L. Cook, Jens M. Turowski, Niels Hovius : A demonstration of importance of bedload transport for fluvial bedrotionck erosion and knickpoint propaga, Earth Surface Peocesses And Landforms, 2012
4. 4) Kristen L. Cook. Jens M. Turowski, Niels Hovius, River gorge eradication by downstream sweep erosion, nature geosciense, 2014