@article {IOPORT.50229916,
    author       = {Alvarez, Dora and Hidalgo, Hugo},
    title        = {Document analysis and visualization with zero-inflated Poisson},
    year         = {2009},
    journal      = {Data Min. Knowl. Discov.},
    volume       = {19},
    number       = {1},
    pages        = {1-23},
    doi          = {10.1007/s10618-009-0127-4},
    identifier   = {50229916},
}