1. E. H. Bryan, 1970 . Quality of stormwater drainage from urban land areas in North Carolina . Water Resources Research Institute of the University of North Carolina. Report No. 37. 63 pp.
2. Federal Water Pollution Control Administration Report., 1967 . Problems of combined sewer facilities and overflows. WP-20-11, 189 pp.
3. Federal Water Quality Administration Report., 1970 . Storm water pollution from urban land activity. 11034 FKL. 325 pp.