TY - JOUR AU - D. Buhl AU - L. Snyder AU - F. Lovas AU - D. Johnson BT - The Astrophysical Journal DA - Jan-09-1974 DO - 10.1086/181600 PY - 1974 EP - L97 T2 - The Astrophysical Journal TI - Silicon Monoxide: Detection of Maser Emission from the Second Vibrationally Excited State UR - http://adsabs.harvard.edu/full/1974ApJ...192L..97B VL - 192 SN - 0004-637X ER -