TY - JOUR AU - J. Simon AU - Xue-Ning Bai AU - J. Stone AU - Phillip Armitage AU - K. Beckwith BT - The Astrophysical Journal DA - 2013-02 DO - 10.1088/0004-637X/764/1/66 PY - 2013 EP - 66 T2 - The Astrophysical Journal TI - Turbulence in the Outer Regions of Protoplanetary Disks. I. Weak Accretion with no Vertical Magnetic Flux VL - 764 SN - 0004-637X ER -