1. Leonard L. Gribsby. Power System Stability and Control, Taylor & Francis Group, LLC, 2012.
2. Farouk A.M. Rizk, Giao N. Trinh. High Voltage Engineering, Taylor & Francis Group, 6000 Broken Sound Parkway NW,Suite 300 Boca Raton, FL 33487-2742, 2014.
3. Marko Cepin. Assessment of Power System Reliability, methods and applications. Springer, London Dordrecht Heidelberg New York, 2004.
4. Cristina Ciulavu, Elena Helerera. Power Transformer incipient faults monitoring. Transilvania University of Brasov, No, 32, 2008, ISSN 1842 – 4805.
5. Nikolina Petkova,, Petar Nakov, Valeri Mladenov. Real Time Monitoring of Incipient Faults in Power Transformer, ISBN 978-3-662-49434-9, Springer-Verlag Berlin Heidelberg, 2016.