Marcinkiewicz type laws of large numbers and convergence of moments for U-statistics, Probability in Banach spaces ,8, Bowdoin, Maine (1991), Progr. Probab. 30 (1992) 273-291 (with E. Giné).
On Hoffmann-Jørgensen's inequality for U-processes Probability in Banach spaces ,8, Bowdoin, Maine (1991), Progr. Probab. 30 (1992) 80-91 (with E. Giné ).
A remark on convergence in distribution of U-statistics Ann. of Probab. 22 (1994) 117-125, (with E. Giné).
Laws of large numbers for quadratic forms, maxima of products and truncated sums of i.i.d. random variables Ann. of Probab. 23 (1995) 292-333, (with J. Cuzick and E. Giné).
Necessary and sufficient conditions for the strong law of large numbers for U-statistics, (with R. Latala), Ann. of Probab. 28 (2000) 1908-1924.
The LIL for canonical U-statistics of order 2. (with E. Giné, S. Kwapien and R. Latala) Ann. Probab. 29 (2001) 520-557.
Exponential and Moment Inequalities for U-statistics. High Dimensional Probability II - Progress in Probability, Birkhauser (2000) 13-38 (with E. Giné and R. Latala).