@article{articled72ab9c0,
title   = {Harmonic generation and chaos in an electromechanical pendulum},
author = {Marega Junior, Euclydes and Ioriatti Júnior, Lidério Citrângulo and Zílio, Sérgio Carlos},
year = {1991},
doi = {10.1119/1.16742},
journal   = {American Journal of Physics}
}