TY - JOUR A1 - T. Johannsen A1 - D. Psaltis AU - BT - ApJ IS - 1 LA - eng PY - 2011 EP - 11 T1 - Testing the No-hair Theorem with Observations in the Electromagnetic Spectrum. III. Quasi-periodic Variability T2 - ApJ TI - Testing the No-hair Theorem with Observations in the Electromagnetic Spectrum. III. Quasi-periodic Variability VL - 726 Y1 - 2011 ER -