TY - JOUR AU - L. Hollberg AU - John Hall BT - Physical Review Letters DA - Jan-07-1984 DO - 10.1103/PhysRevLett.53.230 PY - 1984 SP - 230 EP - 233 T2 - Physical Review Letters TI - Measurement of the Shift of Rydberg Energy Levels Induced by Blackbody Radiation VL - 53 SN - 0031-9007 ER -