@misc {IOPORT.70786440,
    author       = {Li, Xianyue and Huang, Yaochun and Zou, Feng and Kim, Donghyun and Wu, Weili},
    title        = {(1+rho)-approximation for selected-internal Steiner minimum tree},
    howpublished = {COCOON, 568-576 (2008).},
    year         = {2008},
    doi          = {10.1007/978-3-540-69733-6_56},
    identifier   = {70786440},
}