1. J. Balciunas, and B. Villegas .1999 .Two new seed head flies attack yellow starthistle., California Ag, 53 :2, 8 –11 .
2. Leafy Spurge and the Species Composition of a Mixed-Grass Prairie
3. C. B. Benefield, J. M. DiTomaso, G. B. Kyser, S. B. Orloff, K. R. Churches, D. B. Marcum, and G. A. Nader .1999 .Success of mowing to control yellow starthistle depends on timing and plant's branching form., California Ag, 53 :2, 17 –21 .
4. B. Blossey, D. Schroeder, S. D. Hight, and R. A. Malecki .1994 .Host specificity and environmental affect of the weevilHylobius transversovittatus,a biological control agent of purple loosestrife (Lythrum salicaria)., Weed Sci, 42 :128 –133 .
5. Effects of Established Perennial Grasses on Yields of Associated Annual Weeds