Palacios Serrano, I. S., C. S. Abril Vera, J. S. Placencia León, and R. C. Guevara Baculima. “Seismic Noise Analysis With Low-Cost Variable Gain Recorder”. IEEE Latin America Transactions, vol. 19, no. 5, June 2021, pp. 815-2, https://latamt.ieeer9.org/index.php/transactions/article/view/4091.