1. Personal NO2 exposures of preschool children in Helsinki;Alm;Journal of Experimental Analysis and Environmental Epidemiology,1998
2. Ambient air pollution and respiratory symptoms complex in preschool children;Awasthi;Indian Journal of Medical Research,1996
3. Bouhuys, A., 1974. Air pollution In: Breathing: Physiology, Environment and Lung Disease. Grune and Stratton, Inc, New York, pp. 385–415.
4. Children and passive smoking;Charlton;Journal of Family Practice,1994
5. Colley, J.R.T., Brasser, L.J., 1980. Chronic respiratory diseases in children in relation to air pollution. Report on WHO study. Euro Reports and Studies 28. Copenhagen.