SEARCH FOR EXCITED CHARGED LEPTONS IN Z0 DECAYS - Abreu, P; Adam, W; Adami, F; Adye, T; Akesson, T; Alekseev, G; Allen, P; Almehed, S; Alted, F; Alvsvaag, S; Amaldi, U; Anassontzis, E; et al. (ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS, 1992)