1. WATER SAVINGS FROM LAWN WATERING RESTRICTIONS DURING A DROUGHT YEAR, FORT COLLINS, COLORADO
2. R. L. Berk, C. J. LaCivita, K. Sredl, and T. F. Cooley , 1981 . Water Shortage - Lessons in Conservation from the Great California Drought, 1976-1977 . Abt Books, Cambridge, Massachusetts, pp.88 -122 .
3. City of Austin, Texas, 1986 . Bond Prospectus - Official Statement, April 11, 1986.