@article {IOPORT.02218952,
    author       = {Dong, Xinzhuang and Zhang, Qingling},
    title        = {Robust passive control for singular systems with time-varying uncertainties.},
    year         = {2004},
    journal      = {Control Theory \& Applications},
    volume       = {21},
    number       = {4},
    issn         = {1000-8152},
    pages        = {517-520},
    publisher    = {South China University of Technology, Guangzhou},
    identifier   = {02218952},
}