R. Li, H. C. Huang, J. Huang. k-level facility location problems. JORS, 64(1):106-113, 2013. [doi]
@article{LiHH13, title = {k-level facility location problems}, author = {R. Li and H. C. Huang and J. Huang}, year = {2013}, doi = {10.1057/jors.2012.31}, url = {http://dx.doi.org/10.1057/jors.2012.31}, researchr = {https://researchr.org/publication/LiHH13}, cites = {0}, citedby = {0}, journal = {JORS}, volume = {64}, number = {1}, pages = {106-113}, }