Processes e+e− → π0(π0′) γ in extended NJL model A. B. Arbuzov, E. A. Kuraev and M. K. Volkov Eur. Phys. J. A, 47 9 (2011) 103 Published online: 13 September 2011 DOI: 10.1140/epja/i2011-11103-7