TY - JOUR AU - K. Uehara AU - John Hall BT - Optics Letters DA - Jan-01-1979 DO - 10.1364/OL.4.000214 PY - 1979 EP - 214 T2 - Optics Letters TI - Hyperfine splitting of the 13CH4 line at 339 \textmum observed by laser-saturated absorption VL - 4 SN - 0146-9592 ER -