@misc {IOPORT.70913975,
    author       = {Jiang, Minghui},
    title        = {Approximability of constrained LCS},
    howpublished = {ISAAC (2), 180-191 (2010).},
    year         = {2010},
    doi          = {10.1007/978-3-642-17514-5_16},
    identifier   = {70913975},
}