[1. Newsome, J. R., and C. H. Keith: Tobacco Sci. 9 (1965) 65.]Search in Google Scholar
[2. Owen, W. C., and M. L. Reynolds: ibid. 11 (1967) H.]Search in Google Scholar
[3. Baker, R. R., and K. D. Kilburn: Beitr. Tabakforscb. 7 (1973) 79.]Search in Google Scholar
[4. Mikami, Y., N. Naitō and Y. Kaburaki: Scientific papers, Central Research Institute, Japan Monopoly Corporation, No. 113 (1971) 99.]Search in Google Scholar
[5. lmazu, T.: ibid. No. 113 (1971) 131 and 139.]Search in Google Scholar
[6. Norman, V.: Beitr. Tabakforsch. 7 (1974) 282.]Search in Google Scholar
[7. Morie, G. P.: Tobacco Sci. 20 (1976) 174.]Search in Google Scholar
[8. Satō, K.: Busseijōsūsuisanhō, Maruzen, 1963, 129.]Search in Google Scholar
[9. Kagakukōgaku-kyōkai/The Society of Chemical Engineers, Japan (ed.): Busseijōsū, Maruzen, 1970, 230. ]Search in Google Scholar