TY - JOUR T1 - Non-linear output frequency response functions for multi-input non-linear Volterra systems JO - INT J CONTROL PY - 2007/06/01 AU - Peng ZK AU - Lang ZQ AU - Billings SA ED - DO - DOI: 10.1080/00207170601185038 VL - 80 IS - 6 SP - 843 EP - 855 Y2 - 2025/11/29 ER -