@article {IOPORT.50205205,
    author       = {Abbas, Nasir and Riaz, Muhammad and Does, Ronald J. M. M.},
    title        = {Enhancing the performance of EWMA charts},
    year         = {2011},
    journal      = {Quality and Reliability Eng. Int.},
    volume       = {27},
    number       = {6},
    pages        = {821-833},
    doi          = {10.1002/qre.1175},
    identifier   = {50205205},
}