Nucleon resonances in the fourth-resonance regionA. V. Anisovich, E. Klempt, V. A. Nikonov, A. V. Sarantsev and U. ThomaEur. Phys. J. A, 47 12 (2011) 153DOI: https://doi.org/10.1140/epja/i2011-11153-9