1. Berube, D.E., “Interspecific Competition Between Urophora affinis and U. quadrifasciata (Diptera, Tephritidae) for Ovipositional Sites on Diffuse Knapweed (Centaurea diffusa: Compositae),” Z. Angew. Entomol. 90, 299–306 (1980).
2. Berube, D.E. and Zacharuk, R.Y., “The Abdominal Musculature Associated with Oviposition in Two Gall-Forming Tephritid Fruit Flies in the Genus Urophora,” Can. J. Zool. 61, 1806–1814 (1983).
3. Dean, R.W., “Anatomy and Postpupal Development of the Female Reproductive System in the Apple Maggot Fly, Rhagoletis pomonella Walsh,” N. Y. Agric. Exp. Stn., Geneva, Tech. Bull. 229, 3–31 (1935).
4. Kotrba, M., “1. 3. Morphology and Terminology of the Female Postabdomen,” in Contributions to a Manual of Palaearctic Diptera (with Special Reference to Flies of Economic Importance) (Sci. Herald, Budapest, 2000), Vol. 1, pp. 75–84.
5. Nanna, A.D., “Studies on the Mediterranean Fruit-Fly: Ceratitis capitata Wied. 1. The Structure and Operation of the Reproductive Organs,” Bull. Soc. Entomol. Egypt 22, 39–59 (1938).