TY - JOUR AU - P. Maloney BT - The Astrophysical Journal DA - Jan-09-1993 DO - 10.1086/173055 PY - 1993 EP - 41 T2 - The Astrophysical Journal TI - Sharp edges to neutral hydrogen disks in galaxies and the extragalactic radiation field UR - http://articles.adsabs.harvard.edu/full/1993ApJ...414...41M VL - 414 SN - 0004-637X ER -