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2. ASTM Method D2887-73 (1981) Book of ASTM standards, part 24. American Society for Testing and Materials, Philadelphia, p 799
3. Suatoni JC (1979) In: Altgelt KH, Gouw TH (eds) Chromatography in petroleum analysis, Marcel Dekker, New York, p 121
4. Synovec RE, Yeung ES (1985) J Chromatogr Sci 23:214
5. Whittemore IM (1979) In: Altgelt KH, Gouw TH (eds) Chromatography in petroleum analysis. Marcel Dekker, New York, p 41