| Ivanov, K., Georgiev, E., Maneva, D., Popov, D., and Stamatova, V. 1988. Changes in fennel oil during storage in the presence of heavy metals. Nauchni-Tr.-Vissh. Inst. Khranit. Vkusova Prom.-st. 35:35-46. |
| |
| Akgül, A. 1986. Studies on the essential oils from turkish fennel seeds (Foeniculum vulgare m. var. dulce). In: Progress in Essential Oil Research, eds. Brunke, E.J. W. de Gruyter, Berlin, Germany. 5:487-489. |
| |
| Jean, F.I. 1991. Extraction au four micro-ondes des diverses plantes cultivees et spontanitees. Rivista Ital. EPPOS. 504-510. |
| |
| Kubeczka, K.-H., and Formácek, V. 1982. Essential oils analysis by capillary gas chromatography and carbon-13 NMR spectroscopy. :219-226. John Wiley & Sons, Chichester, UK. |
| |
| Lawrence, B.M. 1980. New trends in essential oils. Perfum. Flavor. 5(4):6-17. |
| |
| Li, C., and Wan, A. 1989. Tile study on the chemical constituents of the essential oil from Chinese Xiaohuixiang and their processed products. Chin. J. Pharm. Anal. 9(6):336-339. |
| |
| Marotti, M., and Piccaglia, R. 1992. The influence of distillation conditions on the essential oil composition of three varieties of Foeniculum vulgare Mill. J. Essent. Oil Res. 4(6):569-576. |
| |
| Piccaglia, R., and Marotti, M. 1993. Characterization of several aromatic plants grown in northern Italy. Flavour Fragr. J. 8(23):115-122. |
| |
| Zygadlo, J.A., Lamarque, A.L., Maestri, D.M., and Grosso, N.R. 1995. Empleo de aceites esenciales como antioxidantes naturales. Grasas y Aceites. 46:285-288. |
| |
