1. MA McHugh, VJ Krukonis. Supercritical Fluid Extraction: Principles and Practice. 2nd ed.Boston: Butterworth-Heinemann, 1994, pp417-426.
2. PILOT PLANT EXTRACTION OF HOPS WITH LIQUID CARBON DIOXIDE AND THE USE OF THESE EXTRACTS IN PILOT AND PRODUCTION SCALE BREWINGa
3. DA Moyler. In: MB King, TR Bott, eds. Extraction of Natural Products Using Near-Critical Solvents. Glasgow: Blackie Academic, 1993, pp140-183.
4. Natural antioxidants produced by supercritical extraction
5. JW King.In:E Kiran, PG Debenedetti, CJ Peters. Supercritical Fluids: Fundamentals and Applications. Dordrecht: Kluwer Academic, 2000, pp451-488.