Emery, E.B., T.P. Simon, and R. Ovies. 1998. Influence of the family Catostomidae on the metrics developed for a Great River index of biotic integrity. PP. 203-224. In T.P. Simon (ed). Assessing the Sustainability and Biological Integrity of Water Resources using Fish Communities. CRC Press: Boca Raton, FL. 652 pp.