TY - JOUR T1 - EXPERIMENTAL IDENTIFICATION OF MULTI-DEGREE-OF-FREEDOM NONLINEAR-SYSTEMS USING RESTORING FORCE METHODS JO - MODAL ANAL PY - 1994/01/01 AU - WORDEN K AU - WRIGHT JR AU - ALHADID MA ED - VL - 9 IS - 1 SP - 35 EP - 55 Y2 - 2024/12/22 ER -