1. Department of the Environment, Expert Panel on Air Quality Standards: Benzene, HM Stationary Office, London, 1994.
2. M. W. Sigrist , Air Monitoring by Spectroscopic Techniques, Chemical Analysis, Vol. 127, ed. Winefordner, J. D., Wiley, New York, 1994, p. 281.
3. M. W. Sigrist , Air Monitoring by Spectroscopic Techniques, Chemical Analysis, Vol. 127, ed. Winefordner, J. D., Wiley, New York, 1994, p. 340.
4. M. W. Sigrist , Air Monitoring by Spectroscopic Techniques, Chemical Analysis, Vol. 127, ed. Winefordner, J. D., Wiley, New York, 1994, p. 140.