TY - JOUR T1 - An investigation into the characteristics of non-linear frequency response functions. Part 2: New analysis methods based on symbolic expansions and graphical techniques JO - INT J CONTROL PY - 2005/09/20 AU - Yue R AU - Billings SA AU - Lang ZQ ED - DO - DOI: 10.1080/00207170500144524 VL - 78 IS - 14 SP - 1130 EP - 1149 Y2 - 2024/12/25 ER -