Evidence for B+ --> K0K+ and B0 --> K0K0, and measurement of the branching fraction and search for direct CP violation in B+ --> K0pi+. - Aubert B; Barate R; Boutigny D; Couderc F; Karyotakis Y; Lees JP; Poireau V; Tisserand V; Zghiche A; Grauges E; Palano A; Pappagallo M; et al. (Physical review letters, 2005)