%0 Journal Article %A Françoise Lust-Piquard %T Riesz transforms on generalized Heisenberg groups and Riesz transforms associated to the Cheat flow. %J Publicacions Matemàtiques %D 2004 %P 309-333 %V 48 %N 2 %U https://geodesic-test.mathdoc.fr/item/PMATES_2004__48_2_41503/ %G en %F PMATES_2004__48_2_41503