K Ackerstaff, G Alexander,
J Allison, N Altekamp… - Physics Letters B, 1998 - Elsevier
A search for stable and long-lived massive particles of electric charge| Q/e|= 1 or 2/3, pair-
produced in e+ e− collisions at centre-of-mass energies from 130 to 183 GeV, is reported by …