The pseudoscalar hadronic channel contribution of the light-by-light process to the muon (g−2) μ within the nonlocal chiral quark modelA.E. Dorokhov, A.E. Radzhabov and A.S. ZhevlakovEur. Phys. J. C, 71 7 (2011) 1702DOI: https://doi.org/10.1140/epjc/s10052-011-1702-6