Statistics & Probability Letters
Statistics and Probability Letters > 2003 > 62 > 4 > 355-360
Statistics and Probability Letters > 2003 > 65 > 4 > 369-377
Statistics and Probability Letters > 2003 > 62 > 4 > 355-360
Statistics and Probability Letters > 2003 > 65 > 4 > 369-377