Nicolai N. Pisaruk. A 2-approximation algorithm for the network substitution problem. Oper. Res. Lett., 34(1):94-96, 2006. [doi]
@article{Pisaruk06,
title = {A 2-approximation algorithm for the network substitution problem},
author = {Nicolai N. Pisaruk},
year = {2006},
doi = {10.1016/j.orl.2005.03.005},
url = {http://dx.doi.org/10.1016/j.orl.2005.03.005},
researchr = {https://researchr.org/publication/Pisaruk06},
cites = {0},
citedby = {0},
journal = {Oper. Res. Lett.},
volume = {34},
number = {1},
pages = {94-96},
}