Statistics & Probability Letters
Statistics and Probability Letters > 2003 > 62 > 2 > 123-135
Statistics and Probability Letters > 2003 > 62 > 2 > 111-115
Statistics and Probability Letters > 2003 > 62 > 2 > 123-135
Statistics and Probability Letters > 2003 > 62 > 2 > 111-115