Practical guidelines for the natural excitation technique (NExT) and the eigensystem realization algorithm (ERA) for modal identification using ambient vibration

Caicedo, Juan M. 2011. “Practical Guidelines for the Natural Excitation Technique (NExT) and the Eigensystem Realization Algorithm (ERA) for Modal Identification Using Ambient Vibration”. Experimental Techniques 35 (4): 52-58.