Nucleon resonances in the fourth-resonance region A. V. Anisovich, E. Klempt, V. A. Nikonov, A. V. Sarantsev and U. Thoma Eur. Phys. J. A, 47 12 (2011) 153 Published online: 14 December 2011 DOI: 10.1140/epja/i2011-11153-9