For citations:
Dobrich V.A., Khelimskaya I.V., Bogatkov N.D., Uvarova I.V., Kaspruk O.B. Cough productivity and viscoelastic properties of tracheobronchial secretion in asthmatic patients during monotherapy with salbutamol, ipratropium and flunizoiide. PULMONOLOGIYA. 1998;(4):36-40. (In Russ.)