1. AgSource, 2006a. Test Procedures and Methods. AgSource Laboratories. Retrieved from (accessed 09.29.15).
2. AgSource, 2006b. Understanding a Soil Analysis. AgSource Laboratories. Retrieved from (accessed 09.29.15).
3. Runoff water quality and vegetation establishment for groundcovers on steep slopes;Babcock;J. Soil Water Conserv.,2011
4. Biesboer, D.D., Neid, S., Darveau, B., 1998. Salt Tolerance in Short-statured Native Grasses. Technical Report No. MN/RC-1998/16. Minnesota Department of Transportation, St. Paul, Minn.
5. Controlling erosion from highway projects;Block;BioCycle,2000