TY - JOUR AU - D. Hollenbach AU - S.-I. Chu AU - Richard McCray BT - The Astrophysical Journal DA - Jan-09-1976 DO - 10.1086/154627 PY - 1976 EP - 458 T2 - The Astrophysical Journal TI - H2 in expanding circumstellar shells UR - http://adsabs.harvard.edu/full/1976ApJ...208..458H VL - 208 SN - 0004-637X ER -