1. Chemical derivatives of castor oil;Achaya;J. Am. Oil Chem. Soc.,1971
2. American Society for Testing Materials, 1996. Standard Test Method for Pour Point of Petroleum Products. ASTM (D 97-96a), ASTM, Philadelphia, PA, pp. 1–8.
3. American Society for Testing Materials, 1997. Standard Test Method for Kinematic Viscosity of Transparent and Opaque Liquids (the Calculation of Dynamic Viscosity). ASTM (D 445-97), ASTM, Philadelphia, PA, pp. 1–9.
4. American Society for Testing Materials, 1998a. Standard Practice for Calculating Viscosity Index from Kinematic Viscosity at 40 and 100°C. ASTM (D 2270-93), ASTM, Philadelphia, PA, pp. 1–6.
5. American Society for Testing Materials, 1998b. Standard Test Method for Oxidation Stability of Steam Turbine Oils by Rotating Pressure Vessel. ASTM (D 2272-98), ASTM, Philadelphia, PA, pp. 1–12.