1. Problems patients have using pressurized aerosol inhalers;Crompton;Eur. J. Respir. Dis. Suppl.,1982
2. Improved lung deposition and decreased oropharyngeal deposition with a new CFC-free beclomethasone metered dose inhaler;Leach;Eur. Respir. J.,1996
3. Deposition of pressurised aerosols in the human respiratory tract;Newman;Thorax,1981
4. Errors in inhalation technique and efficiency in inhaler use in asthmatic children;Pedersen;Allergy,1986
5. Plume characteristics of the sprayed dose from CFC and HFA metered dose inhalers;Purewal;J. Aerosol Med.,1998