For citations:

Shmelev E.I., Ovcharenko S.I., Tsoy A.N., Bezlepko A.V., Aisanov Z.R., Shmeleva N.M., Fedorova T.A., Chuchalin A.G. Efficacy of fenspirid (Erespal) in chronic obstructive lung disease. PULMONOLOGIYA. 2005;(5):93-101. (In Russ.) https://doi.org/10.18093/0869-0189-2005-0-5-93-101