BibTex format
@inproceedings{Faisal:2017:10.1183/1393003.congress-2017.OA3430,
author = {Faisal, A and Sadaka, AS and Purcell, H and Polkey, MI and Hopkinson, NS},
doi = {10.1183/1393003.congress-2017.OA3430},
publisher = {EUROPEAN RESPIRATORY SOC JOURNALS LTD},
title = {Reduced ventilatory efficiency and muscle endurance in smokers with normal spirometry},
url = {http://dx.doi.org/10.1183/1393003.congress-2017.OA3430},
year = {2017}
}