Boersma, W. G., Puister, S. M., van Altena, R., de Vries-Hospers, H. G., Molinari, M., & Koëter, G. H. (1994). Clinical and bacteriological efficacy and tolerability of FCE 22891 in patients with exacerbations of chronic obstructive pulmonary disease.

Boersma, W G., S M. Puister, R. van Altena, H G. de Vries-Hospers, M. Molinari, và G H. Koëter. Clinical and Bacteriological Efficacy and Tolerability of FCE 22891 in Patients With Exacerbations of Chronic Obstructive Pulmonary Disease. 1994.

Boersma, W G., et al. Clinical and Bacteriological Efficacy and Tolerability of FCE 22891 in Patients With Exacerbations of Chronic Obstructive Pulmonary Disease. 1994.