TY - JOUR AU - J Brown AU - K Evenson AU - L Zink C2 - Astrophysical Journal DA - 1994-01-01 00:01:00 LA - en M1 - 431 PB - Astrophysical Journal PY - 1994 TI - Atomic Sulfur: Frequency Measurement of the J=0 ← 1 Fine Structure Transition at 56.3 Microns by Laser Magnetic Resonance ER -