TY - JOUR AU - John Hall AU - Christian Bordé BT - Physical Review Letters DA - Jan-05-1973 DO - 10.1103/PhysRevLett.30.1101 PY - 1973 SP - 1101 EP - 1104 T2 - Physical Review Letters TI - Measurement of Methane Hyperfine Structure Using Laser Saturated Absorption VL - 30 SN - 0031-9007 ER -