Invasiveness of alien plants: Some aspects of the impact of Scotch Broom (Cytisus scoparius (L.) link) on Douglas-fir seedlings and its control. 1999. Prasad, R.P.; Naurais, S. Pages 23-25 (Vol. 5) in M. Kelly, M. Howe, and B. Neill, editors. Proceedings California Exotic Pest Plant Council Symposium, October 15-17, 1999, Sacramento, California. CalEPPC, San Juan Capistrano, CA.