Measurement of the branching fraction of Gamma(4S) --> B0B0. - Aubert B; Barate R; Boutigny D; Couderc F; Karyotakis Y; Lees JP; Poireau V; Tisserand V; Zghiche A; Grauges-Pous E; Palano A; Pappagallo M; et al. (Physical review letters, 2005)