Estell RE, Tellez M.R., Fredrickson E.L., Anderson D.M., Havstad K, Remmenga M.D..  2000.  Fluorensia cernua extracts decrease intake of alfalfa pellets by sheep. 2000 Joint Meeting, American Society of Animal Science/American Dairy Science Association. 78:113.

Estell RE, Fredrickson E.L., Anderson D.M., Havstad K, Remmenga M.D..  1998.  Tarbush leaf surface terpene profile in relation to mammalian herbivory. Journal of Chemical Ecology. 24:1-12.

Estell RE, Anderson D.M., Havstad K.  1994.  Effects of organic solvents on use of tarbush by sheep. Journal of Chemical Ecology. 20:1137-1142.