G. Goldhaber, F.M. Pierre, G.S. Abrams, M.S. Alam, A.M. Boyarski, et al.. Observation in $e^+e^-$ annihilation of a narrow state at 1865 MeV/C2 decaying to $K\pi$ and $K\pi\pi\pi$.
Physical Review Letters, American Physical Society, 1976, 37, pp.255-259.
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