@Article{hu01,
author = {S. Hu and E. A. Hoffman and J. M. Reinhardt},
title = {{A}utomatic lung segmentation for accurate quantitation of volumetric {X}-ray {CT} images},
journal = {IEEE Trans. Medical Imaging},
year = 2001,
volume = 20,
number = 6,
pages = 490-498,
url = {http://dx.doi.org/10.1109/42.929615},
}