R. García-Martín, B. Moussallam. MO analysis of the high statistics Belle results on γγ→π+π−, π0π0 with chiral constraints.
European Physical Journal C: Particles and Fields, Springer Verlag (Germany), 2010, 70, pp.155-175.
⟨10.1140/epjc/s10052-010-1471-7⟩.
⟨in2p3-00546133⟩