Search for a fourth generation b '-quark at LEP-II at root s=196-209GeV (EUROPEAN PHYSICAL JOURNAL C, 2007)

(untitled) - Abdallah, J; Abreu, P; Adam, W; Adzic, P; Albrecht, T; Alemany-Fernandez, R; Allmendinger, T; Allport, P; Amaldi, U; Amapane, N; Amato, S; Anashkin, E; et al.