@incollection{Grobler12,
author = {Cirelene Grobler and David M. Maree and Elvis M. Irusen},
title = {Functional Evaluation in Respiratory Disorders},
booktitle = {Lung Diseases},
publisher = {IntechOpen},
address = {Rijeka},
year = {2012},
editor = {Elvis Malcolm Irusen},
chapter = {27},
doi = {10.5772/39066},
url = {https://doi.org/10.5772/39066}
}