@article{hu-08b,
 author = {Bin Hu and Markus Leitner and Günther R. Raidl},
 journal = {Journal of Heuristics},
 keywords = {hybrid, mip, netdesign, vns},
 number = {5},
 pages = {473--499},
 title = {Combining Variable Neighborhood Search with Integer Linear Programming for the Generalized Minimum Spanning Tree Problem},
 url = {https://www.ac.tuwien.ac.at/files/pub/hu-06.pdf},
 volume = {14},
 year = {2008}
}