OBSERVATION OF THE DECAY KL-]PI-0-GAMMA-GAMMA - Barr, G; Carosi, R; Coward, D; Cundy, D; Doble, N; Gatignon, L; Gibson, V; Grafstrom, P; Hagelberg, R; Kesseler, G; Vanderlans, J; Nelson, H; et al. (1990)