Statistics & Probability Letters
Statistics and Probability Letters > 2007 > 77 > 1 > 25-31
Statistics and Probability Letters > 2007 > 77 > 6 > 649-653
Statistics and Probability Letters > 2007 > 77 > 1 > 25-31
Statistics and Probability Letters > 2007 > 77 > 6 > 649-653