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Mathematische Nachrichten > 287 > 17-18 > 2138 - 2149
Statistics and Probability Letters > 2013 > 83 > 2 > 616-623
Journal of Mathematical Analysis and Applications > 2008 > 339 > 1 > 553-565
Mathematische Nachrichten > 287 > 17-18 > 2138 - 2149
Statistics and Probability Letters > 2013 > 83 > 2 > 616-623
Journal of Mathematical Analysis and Applications > 2008 > 339 > 1 > 553-565