1. Bronchodilators in chronic airflow limitation;Guyatt, G.H.; Townsend, M.; Pugsley, S.O.; Keller, J.L.; Short, H.D.; Taylor, D.W.;Am Rev Respir Dis,1987
2. Sustained-release theophylline reduces dyspnea in nonreversible obstructive airway disease;Mahler, D.A.; Matthay, R.A.; Snyder, P.E.; Wells, C.K.; Loke, J.;Am Rev Respir Dis,1985
3. A randomized, controlled trial of theophylline in patients with severe chronic obstructive pulmonary disease;Murciano, D.; Auclair, M.; Pariente, R.; Aubier, M.;N Engl J Med,1989
4. Salbutamol and ipratropium in partially reversible airways obstruction;Connolly, C.K.; Chan, N.S.;Br J Dis Chest,1987
5. Assessment of the clinical usefulness of nebulized ipratropium bromide in patients with chronic airflow limitation;Brown, I.G.; Chan, C.S.; Kelly, C.A.; Dent, A.G.; Zimmerman, P.V.;Thorax,1984