Interference phenomena in the JP = 1/2− wave in η photoproductionA. V. Anisovich, E. Klempt, B. Krusche, V. A. Nikonov, A. V. Sarantsev, U. Thoma and D. WerthmüllerEur. Phys. J. A, 51 6 (2015) 72DOI: https://doi.org/10.1140/epja/i2015-15072-5