@misc {IOPORT.70688150,
    author       = {Zhang, Zheng and Hu, Xiang and Cheng, Chung-Kuan and Wong, Ngai},
    title        = {A block-diagonal structured model reduction scheme for power grid networks},
    howpublished = {DATE, 44-49 (2011).},
    year         = {2011},
    identifier   = {70688150},
}