1. Allmendinger P. and Hidy G.M. (1978) Private communications.
2. Characterization of Denver's urban plume using an instrumented aircraft;Anderson,1977
3. The elimination of vehicle paniculate emissions;Associated Octel Co. Ltd;Publication OP 72/5,1972
4. Characterizing and measuring automotive paniculate emissions with two improved sampling techniques;Bergman,1971
5. Analytical method for measuring SBR tire debris in the environment;Brachaczek;Rubber Chem. Technol.,1974