TY - JOUR AU - J. Villa-Vargas AU - Isaac Shlosman AU - C. Heller BT - The Astrophysical Journal DA - 2009-01 DO - 10.1088/0004-637X/707/1/218 N1 - JILA Pub. 8435 PY - 2009 T2 - The Astrophysical Journal TI - Dark matter halos and evolution of bars in disk galaxies: collisionless models revisited VL - 707 ER -