@article {IOPORT.50038939,
    author       = {Yan, Xiefei and Zou, Yun},
    title        = {Optimal and sub-optimal quarantine and isolation control in SARS epidemics},
    year         = {2008},
    journal      = {Mathematical and Computer Modelling},
    volume       = {47},
    number       = {1-2},
    pages        = {235-245},
    doi          = {10.1016/j.mcm.2007.04.003},
    identifier   = {50038939},
}