1. Anonymous, 1999. CALFED Bay Delta Program, Water Use Efficiency Program Plan, Draft Programmatic EIS/EIR, Technical Appendix. http://calfed.water.ca.gov/, Sacramento.
2. Anonymous, 2000. CALFED Bay-Delta Programmatic Record of Decision. http://calfed.water.ca.gov/, Sacramento.
3. Benefield, C.B., 1998. Yellow Starthistle: mowing control, root dynamics, and reproductive biology. M.S. thesis, University of California, Davis.
4. Phenology of California grasslands;Chiariello,1989
5. Ecological consequences of altered hydrological regimes in fragmented ecosystems in southern Australia;Cramer;Austral Ecology,2002