Dynamical quark loop light-by-light contribution to muon g-2 within the nonlocal chiral quark modelA. E. Dorokhov, A. E. Radzhabov and A. S. ZhevlakovEur. Phys. J. C, 75 9 (2015) 417DOI: https://doi.org/10.1140/epjc/s10052-015-3577-4