TY - JOUR AU - Scholl, T AU - Cameron, R AU - Rosner, S AU - Zhang, L AU - Holt, R AU - Sansonetti, Craig AU - Gillaspy, John C2 - Physical Review Letters DA - 1993-01-01 00:01:00 LA - en M1 - 71 PB - Physical Review Letters PY - 1993 TI - Precision Measurement of Relativistic and QED Effects in Heliumlike Beryllium ER -