K -> pi pi pi gamma in chiral perturbation theory
  We present a complete analysis of K -> 3 pi gamma decays to O(p^4) in the low-energy expansion of the Standard Model. We employ the notion of "generalized bremsstrahlung" to take full advantage of experimental information on the corresponding non-radiative K -> 3 pi decays. 
G. D'Ambrosio, G. Ecker, G. Isidori and H. Neufeld