%0 Journal Article %A Khalkhali, Masoud %A Rangipour, Bahram %T Cup products in Hopf-cyclic cohomology %J Comptes Rendus. Mathématique %D 2005 %P 9-14 %V 340 %N 1 %I Elsevier %U http://www.numdam.org/articles/10.1016/j.crma.2004.10.025/ %R 10.1016/j.crma.2004.10.025 %G en %F CRMATH_2005__340_1_9_0