@article{ref1,
title="Respiratory airflow patterns that satisfy power and force criteria of optimality",
journal="Annals of biomedical engineering",
year="1972",
author="Ruttimann, U. E. and Yamamoto, W. S.",
volume="1",
number="2",
pages="146-159",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0090-6964",
doi="",
url="http://dx.doi.org/"
}