Statistics & Probability Letters
Statistics and Probability Letters > 2007 > 77 > 2 > 181-189
Statistics and Probability Letters > 2007 > 77 > 5 > 530-538
Statistics and Probability Letters > 2007 > 77 > 2 > 181-189
Statistics and Probability Letters > 2007 > 77 > 5 > 530-538