TY - JOUR AU - B. Vaughan AU - M. Nowak BT - The Astrophysical Journal DA - Jan-01-1997 DO - 10.1086/310430 PY - 1997 SP - L43 EP - L46 T2 - The Astrophysical Journal TI - X-Ray Variability Coherence: How to Compute It, What It Means, and How It Constrains Models of GX 339-4 and Cygnus X-1 UR - http://stacks.iop.org/1538-4357/474/i=1/a=L43 VL - 474 SN - 0004637X ER -