Christian Blum, Matthias Ehrgott. Local Search Algorithms for the k-cardinality Tree Problem. Discrete Applied Mathematics, 128(2-3):511-540, 2003. [doi]
@article{BlumE03,
title = {Local Search Algorithms for the k-cardinality Tree Problem},
author = {Christian Blum and Matthias Ehrgott},
year = {2003},
doi = {10.1016/S0166-218X(02)00548-6},
url = {http://dx.doi.org/10.1016/S0166-218X(02)00548-6},
tags = {search},
researchr = {https://researchr.org/publication/BlumE03},
cites = {0},
citedby = {0},
journal = {Discrete Applied Mathematics},
volume = {128},
number = {2-3},
pages = {511-540},
}