The 1 reference without contexts in paper S. Avdeev N., С. Авдеев Н. (2016) “ПРОФИЛАКТИКА ОБОСТРЕНИЙ ХРОНИЧЕСКОЙ ОБСТРУКТИВНОЙ БОЛЕЗНИ ЛЕГКИХ // PREVENTION OF ACUTE EXACERBATIONS OF CHRONIC OBSTRUCTIVE PULMONARY DISEASE” / spz:neicon:pulmonology:y:2016:i:5:p:591-603

Wedzicha J.A., Donaldson G., Chuecos F. et al. Effect of aclidinium bromide on exacerbations in patients with moderate – to severe COPD: pooled analysis of phase III studies. Eur. Respir. J. 2014; 44: 1888.
(check this in PDF content)