Study of dipion bottomonium transitions and search for the h b(1P) state - Lees, Jean-Pierre; Adametz, Aleksandra; Marks, Jörg; Uwer, Ulrich; Bünger, Chris; Grünberg, Oliver; Hartmann, Thomas; Leddig, Torsten; Schröder, Henning; Waldi, Roland (Physical review, 2011)