1. V. A. Abdurazakov, M. D. Bodnya, and V. V. Stypinskii, Catalpa ? A Valuable Technical and Decorative Crop [in Russian], Tashkent (1962).
2. Handbook on Methods of Investigation, Technical and Chemical Control, and the Accounting of Production in the Oils and Fats Industry [in Russian]. Leningrad (1967).
3. N. I. Sharapov, Oil-bearing Plants and the Oil-forming Process [in Russian], Moscow-Leningrad (1959).
4. B. N. Tyutyunnikov, The Chemistry of Fats [in Russian], Moscow (1974).
5. L. A. Goldblatt, Economic Botany,13, No. 4, 343 (1959).