1. A.J. Haagen-Smit, Indust. Eng. Chem. 44, 1342 (1952).
2. J. Evelyn, Fumifugum: The Inconvenience of the Aer and Smoake of London Dissipated, Together with Some Remedies, Humbly Proposed, Bedel and Collins, London, 1661.
3. J.T. Middleton, J.B. Kendrick, Jr., and H.W. Schwalm, Plants Dis. Rep. 34, 245 (1950).
4. M. Lippmann, J. Air Waste Manag. Assoc. 39, 672 (1989).
5. M. Lippmann, Environ. Sci. Technol. 25, 1954 (1991).