Statistics & Probability Letters
Statistics and Probability Letters > 2004 > 66 > 3 > 289-301
Statistics and Probability Letters > 2004 > 67 > 3 > 241-247
Statistics and Probability Letters > 2004 > 69 > 4 > 439-445
Statistics and Probability Letters > 2004 > 70 > 4 > 285-298