Interplay of quark and meson degrees of freedom in a near-threshold resonance V. Baru, C. Hanhart, Yu. S. Kalashnikova, A. E. Kudryavtsev and A. V. Nefediev Eur. Phys. J. A, 44 1 (2010) 93-103 Published online: 20 February 2010 DOI: 10.1140/epja/i2010-10929-7