1. Circadian timekeeping in health and disease: part 1. Basic properties of circadian pacemakers;Moore-Ede, M.C.; Czeisler, C.A.; Richardson, G.S.;N Engi J Med
2. Diurnal variation of respiratory function independent of air quality;Kerr, H.D.;Arch Environ Health,1973
3. Comparison of normal and asthmatic circadian rhythms in peak expiratory flow rate;TJH, Hetzel M.R.Clark;Thorax,1980
4. Diurnal variation of asthma;Clark, T.J.H.; Hetzel, M.R.;Br J Dis Cliest,1977
5. Nocturnal asthma: features of attacks, sleep and breathing patterns;Montplaisir, J.; Walsh, J.; Malo, J.L.;Am Rev, Respir Dis,1982