Radiative open charm decay of the Y(3940) , Z(3930) , X(4160) resonances W. H. Liang, R. Molina and E. Oset Eur. Phys. J. A, 44 3 (2010) 479-486 Published online: 07 May 2010 DOI: 10.1140/epja/i2010-10972-4