1. Ambrus, G., K. Albrecht, I. Barta, M. Fábian and K. Köncöl. 1986. Hung. Pat. 190665 01 Oct. 1980. Bioconversion of 3β-carbamoyloxy-5-cholestene to 3β-carbamoyloxy-5-androsten-17-one. Chem. Abs. 105: 113608.
2. Arima, H., T. Beppu and W. Nakamatsu. 1979. Japan Kokai Tokkyo Kobo. 78130643. 17 Apr. 1977. 3a-αH-4α-acetyl-5-hydroxy-7a, β-methyl-hexahydro-1-indanone. Chem. Abs. 90: 150312.
3. Arima, K., H. Nagasawa, H. Bae and G. Tamura. 1969. Microbial transformation of sterols. I. Decomposition of cholesterol by microorganisms. Agr. Biol. Chem. 33: 1636–1643.
4. Büki, K., G. Ambrus and Gy. Horváth. 1975. Metabolic fate of cholesteryl methyl ether in Mycobacterium phlei. Acta Microbiol. Acad. Sci. Hung. 22: 447–451.
5. Büki, K., G. Ambrus, M. Halmos, and J. Szabó. 1976. Hungarian Pat. 11189 16 Aug. 1974. 3β-alkoxycholest-5-ene is transformed to dehydroepiandrosterone. Chem. Abs. 85: 157962.