Asaf Levin. A better approximation algorithm for the budget prize collecting tree problem. Oper. Res. Lett., 32(4):316-319, 2004. [doi]
@article{Levin04:0,
title = {A better approximation algorithm for the budget prize collecting tree problem},
author = {Asaf Levin},
year = {2004},
doi = {10.1016/j.orl.2003.11.002},
url = {http://dx.doi.org/10.1016/j.orl.2003.11.002},
researchr = {https://researchr.org/publication/Levin04%3A0},
cites = {0},
citedby = {0},
journal = {Oper. Res. Lett.},
volume = {32},
number = {4},
pages = {316-319},
}