1. Risk-Based Assessment of Financial Losses Due to Voltage Sag
2. Agência Nacional de Energia Elétrica, “Procedimentos de Distribuição de Energia Elétrica no Sistema Elétrico Nacional (PRODIST).” Module 8, 10th ed., pp. 19–21, Jan. 2018.
3. Signal Processing of Power Quality Disturbances
4. Voltage sags in industrial systems
5. Institute of Electrical and Electronics Engineers, “IEEE guide for identifying and improving voltage quality in power systems,” IEEE Std 1250-2018 (Revision of IEEE Std 1250-2011), pp. 1–61, Nov. 2018.