The S-wave resonance contributions to the three-body decays in perturbative QCD approach Ya Li, Ai-Jun Ma, Wen-Fei Wang and Zhen-Jun Xiao Eur. Phys. J. C, 76 12 (2016) 675 Published online: 07 December 2016 DOI: 10.1140/epjc/s10052-016-4529-3