Study of the reaction npπ → npπ+π− at 1.0 and 1.5 GeVA. P. Jerusalimov, A. V. Belyaev, V. P. Ladygin, A. K. Kurilkin, A. Yu. Troyan and Yu. A. TroyanEur. Phys. J. A, 51 7 (2015) 83DOI: https://doi.org/10.1140/epja/i2015-15083-2