TY - JOUR T1 - Analysis of output frequencies of nonlinear systems JO - IEEE T SIGNAL PROCES UR - http://eprints.whiterose.ac.uk/2662/ PY - 2007/07/01 AU - Wu XF AU - Lang ZQ AU - Billings SA ED - DO - DOI: 10.1109/TSP.2007.894387 VL - 55 IS - 7 SP - 3239 EP - 3246 Y2 - 2025/05/22 ER -