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\bibitem{Cappiello_etal2012} Cappiello, L., Cata, O., D{\textquoteright}Ambrosio, G., \& Gao, D. N. (2012). K+ -> pi(+) pi(0)e(+) e(-): a novel short-distance probe. \textit{Eur. Phys. J. C}, \textit{72}(1), 1872--16pp.

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