1. Particle Data Group collaboration, K.A. Olive et al., Review of particle physics, Chin. Phys. C 38 (2014) 090001 [ INSPIRE ].
2. R. Zhang, Y.-B. Ding, X.-Q. Li and P.R. Page, Molecular states and 1−+ exotic mesons, Phys. Rev. D 65 (2002) 096005 [ hep-ph/0111361 ] [ INSPIRE ].
3. Z.F. Zhang and H.Y. Jin, The zero mode effect in the 1−+ four quark states, Phys. Rev. D 71 (2005) 011502 [ hep-ph/0412226 ] [ INSPIRE ].
4. I.J. General, P. Wang, S.R. Cotanch and F.J. Llanes-Estrada, Light 1−+ exotics: molecular resonances, Phys. Lett. B 653 (2007) 216 [ arXiv:0707.1286 ] [ INSPIRE ].
5. H.-X. Chen, A. Hosaka and S.-L. Zhu, The IGJPC = 1−1−+ tetraquark states, Phys. Rev. D 78 (2008) 054017 [ arXiv:0806.1998 ] [ INSPIRE ].