A MEASUREMENT OF THE LIFETIME OF THE TAU-LEPTON - Abreu, P; Adam, W; Adami, F; Adye, T; Akesson, T; Alekseev, GD; Allen, P; Almehed, S; Alvsvaag, SJ; Amaldi, U; Anassontzis, E; Antilogus, P; et al. (PHYSICS LETTERS B, 1991)