Statistics & Probability Letters
Statistics and Probability Letters > 2003 > 62 > 3 > 317-321
Statistics and Probability Letters > 2003 > 64 > 2 > 121-131
Statistics and Probability Letters > 2003 > 62 > 3 > 317-321
Statistics and Probability Letters > 2003 > 64 > 2 > 121-131