TY - JOUR AU - D. Lazzati AU - B. Morsony AU - Mitchell Begelman BT - The Astrophysical Journal DA - 05/2011 DO - 10.1088/0004-637X/732/1/34 PY - 2011 EP - 34 T2 - The Astrophysical Journal TI - High-Efficiency Photospheric Emission of Long-Duration Gamma-Ray Burst Jets: The Effect of the Viewing Angle VL - 732 ER -