1. Hypothesis of symmetry;Hušková,1984
2. U-Statistics: Theory and Practice. Statistics: Textbooks and Monographs 110;Lee,1990
3. Theory of U-statistics;Koroljuk,1994
4. Random Quadratic Forms and the Bootstrap for U-Statistics
5. Tests of symmetry based on Cramér-von Mises statistics;Hill;Biometrika,1977