1. Guenther, Oil of Celery, The Essential Oils, Vol. IV, Van Nost, USA, 1950, p. 591.
2. Supercritical Fluid Extraction: Principles and Practice;McHugh,1986
3. Gas Extraction;Brunner,1994
4. Supercritical fluid extraction and fractionation of essential oils and related products;Reverchon;J. Supercrit. Fluids,1997
5. Near-critical extraction of sage, celery and coriander seed;Catchpole;J. Supercrit. Fluids,1996