Parameters of scalar resonances from the combined analysis of data on processes ππ → ππ, KK, ηη and J/ψ decays / Y. S. Surovtsev, P. Bydzovsky, R. Kaminski [et.al.] // Physical Review D. 2014. Vol. 89, № 3. P. 036010-1-036010-9. URL: http://vital.lib.tsu.ru/vital/access/manager/Repository/vtls:000474765