First measurement of the ratio B(t –> Wb)/B(t –> Wq) and associated limit on the Cabibbo-Kobayashi-Maskawa element /V(tb)/. - Affolder, T; Akimoto, H; Akopian, A; Albrow, MG; Amaral, P; Amendolia, SR; Amidei, D; Anikeev, K; Antos, J; Apollinari, G; Arisawa, T; Asakawa, T; et al. (Physical Review Letters, 2001)