1. Dickakian, G., Seay, S., Oil Gas J., 85, 47 (1988).
2. Sheu, E.Y., Detar, M.M., Storm, D.A., De Canio, S.J., Fuel, 71, 299 (1992).
3. Cornahan, N.F., Quintero, L., Pfund, D.M., Fulton, J.L., Smith, R.D., Capel, M., Leontaritis, K., Langmuir, 9,2035(1993).
4. “Annual Book of ASTM Standards”, American Society for Testing and Materials, Philadelpia, Part 24, Standard No. D-2006 (1978).
5. Knight, S.A., Chem Ind., 11, 1920 (1967).