Annihilation of p+p→ e^++e^-+ π^0 and p+p→ γ + π^0 through ω-meson intermediate state - Kuraev, E. A.; Bystritskiy, Yu. M.; Bytev, V. V.; Tomasi-Gustafsson, E.; Dbeyssi, A.; Tomasi-Gustafsson, E. (J. Exp. Theor. Phys., 2012)