1. Supercritical Fluid Extraction, Principles and Practice;McHugh,1986
2. Solubility behaviour and fractionation of essential oils in dense carbon dioxide;Stahl;Perf. Flavor.,1985
3. Gas Extraction;Brunner,1994
4. J.C. Ely, J.K. Baker, A review of supercritical fluid extraction, N.B.S. Technical Note 1070, US Government Printing Office, Washington, 1983.
5. Extraction with supercritical gases;Williams;Chem. Eng. Sci.,1981