@ARTICLE {5455,
author={L. Gouveia and P. M. Moura and A. F. Sousa},
doi={10.1016/j.cor.2010.04.016},
journal={Computers and Operations Research},
title={Prize collecting Steiner trees with node degree dependent costs},
year={2011},
month={January},
volume={38},
number={1},
pages={234-245},
ISSN={0305-0548}
}