Statistics & Probability Letters
Statistics and Probability Letters > 1999 > 44 > 4 > 343-350
Statistics and Probability Letters > 2000 > 48 > 3 > 253-259
Statistics and Probability Letters > 1999 > 44 > 4 > 343-350
Statistics and Probability Letters > 2000 > 48 > 3 > 253-259