1. Inhaled foroterol during one year in asthma: a comparison with salbutamol;Arvidsson;Eur. Respir. J.,1991
2. Changes in bronchial reactivity in asthmatic children after treatment with beclomethasone alone or in association with salbutamol;Bennati;J. Asthma,1989
3. Thachyphylaxis of the bronchodilator and protective actions of salmeterol in asthmatics on inhaled corticosteroids;Booth;Amer. J. Resp. Crit. Care Med.,1995
4. Measurement of airways responsiveness in mild to moderate asthmatics during and after 8 weeks of regularly inhaled salmeterol;Booth;Amer. Rev. Respir. Dis.
5. Guidelines for the management of asthma;British Thoracic Society;Brit. Med. J.,1993