Statistics & Probability Letters
Statistics and Probability Letters > 2007 > 77 > 5 > 558-565
Statistics and Probability Letters > 2007 > 77 > 18 > 1705-1711
Statistics and Probability Letters > 2007 > 77 > 5 > 558-565
Statistics and Probability Letters > 2007 > 77 > 18 > 1705-1711