Statistics & Probability Letters
Statistics and Probability Letters > 2003 > 61 > 2 > 215-224
Statistics and Probability Letters > 2003 > 62 > 3 > 245-250
Statistics and Probability Letters > 2003 > 61 > 2 > 215-224
Statistics and Probability Letters > 2003 > 62 > 3 > 245-250