Evidence of two resonant structures in e+e- →π+π-hc / M. Ablikim, M. N. Achasov, S. Ahmed [et al.] // Physical Review Letters. 2017. Vol. 118, № 9. P. 092002-1-092002-8. URL: http://vital.lib.tsu.ru/vital/access/manager/Repository/vtls:000581790