@misc {IOPORT.70836707,
    author       = {Jiang, Huixing and Wang, Xiaojie and Tian, Jilei},
    title        = {Second-order HMM for event extraction from short message},
    howpublished = {NLDB, 149-156 (2010).},
    year         = {2010},
    doi          = {10.1007/978-3-642-13881-2_15},
    identifier   = {70836707},
}