1. The measurement of nitrogen dioxide in the outdoor environment using passive diffusion tube samplers;Atkins;AERE-R12133,1986
2. Fitting curves to data;Caceci;Byte,1984
3. A survey of nitrogen dioxide concentrations in the United Kingdom using diffusion tubes: July to December 1991;Campbell;Warren Spring Laboratory Report LR 893 (AP),1992
4. A survey of nitrogen dioxide concentrations in the United Kingdom using diffusion tubes, July to December, 1991;Campbell;Atmospheric Environment,1994
5. Development of a simple passive technique for the determination of nitrogen dioxide in remote continental locations;Gair;Atmospheric Environment,1991