%0 Journal Article %T Ultrasound assisted synthesis of Cs2.5H0.5PW12O40: An efficient nano-catalyst for preparation of b-amino ketones via aza-Michael addition reactions %A Shobeiri, Zohreh %A Pourayoubi, Mehrdad %A Akbar Heydari %A Teresa Mancilla Percino %A Marco A. Leyva Ramírez %J Comptes Rendus Chimie %@ 1631-0748 %D 2011