TY - JOUR
AU - S. Chu
AU - Allen Mills
AU - John Hall
BT - Physical Review Letters
DA - Jan-05-1984
DO - 10.1103/PhysRevLett.52.1689
PY - 1984
SP - 1689
EP - 1692
T2 - Physical Review Letters
TI - Measurement of the Positronium 1 Triplet S1 to 2 Triplet S1 Interval by Doppler-Free Two-Photon Spectroscopy
VL - 52
SN - 0031-9007
ER -