1. Air pollution in homes 2: Validation of diffusion tube measurements of nitrogen dioxide;Apling;W.S.L. Report LR 311 (AP),1979
2. The use of simple diffusion tubes for the measurement of nitrogen dioxide levels in homes using gas and electricity for cooking;Atkins;AERE-R9184,1978
3. The measurement of nitrogen dioxide in the outdoor environment using passive diffusion tube samplers;Atkins;AERE-R12133,1986
4. Investigations of the “Saltzman Factor”;Crecelius;Staub-Reinhalt Luft,1970