IEEE Standard 1159-1995, “IEEE Recommended Practice for Monitoring Electric Power Quality,” IEEE, 1995.
 H. J. B. Math, I. Y. H. Gu, P. G. V. Axelberg and E.Styvaktakis, “Classification of Underlying Causes of Power Quality Disturbances: Deterministic versus Statistical Methods,” EURASIP Journal on Applied Signal Processing, Vol. 1, 2007, pp. 172-172.
 G. G. Karady, S. Saksena and B. Z. Shi, “Effects of Voltage Sags on House Hold Loads,” IEEE Power Engineering Society General Meeting, Vol. 3, 2005, pp. 24562461.
 M. Mc Granaghan, D. R. Mueller and M. Samotyj, “Voltage Sag in Industrial Systems,” IEEE Transactions on Industry Applications, Vol. 29, 1993, pp. 397-403.
 M. T. Aung and J. V. Milanovic, “The Influence of Transformer Winding Connections on the Propagation of Voltage Sags,” IEEE Transactions on Power Delivery, Vol. 21, 2006.
 W. R. Mendes, M. I. Samesima and F. A. Moura, “Influence of Power Transformer Winding Connections on the Propagation of Voltage Sags through Electric System,” Proceedings of the IEEE, 2008, pp. 1-6.
 L. D. Zhang and M. H. J. Bollen, “A Method for Characterizing Unbalanced Voltage Dips (Sags) with Symmetrical Components,” IEEE Power Engineering Review, Vol. 18, No. 7, 1998, pp. 50-52.
 C. Di Perna, P. Verde, A. Sannino, M. H. J. Bollen, “Static Series Compensator for Voltage Dip Mitigation with Zero-Sequence Injection Capability,” 2003 IEEE Bologna Power Tech Conference Proceedings, Bologna, 23-26 June 2003.
 R.Teodorescu, M. Liserre and P. Rodríguez, “Grid Synchronization in Three Phase Power Converters,” In: Grid Converters for Photovoltaic and Wind Power Systems, John Wily & Sons Ltd., Chichester, 2011, pp. 169-181.
 A. von Jouanne and B. B. Banerjee, “Voltage Unbalance: Power Quality Issues, Related Standards and Mitigation Techniques,” Electric Power Research Institute, Palo Alto, EPRI Final Rep, 2000.
 Aneel, “Contribution for the Normalization of the Quality of Electric Power-Harmonic and Unbalances in the Electric Networks,” Ph.D. Thesis, Federal University of Uberlandia, 2000.
 A. von Jouanne and B. Banerjee, “Assessment of Voltage Unbalance,” IEEE Transactions on Power Delivery, Vol. 16, No. 4, 2001, pp. 782-790.
 F. C. Pereira, J. C. de Oliveira, O. C. N. Souto, A. L.A. Vilaca and P. F. Ribeiro, “An Analysis of Costs Related to the Loss of Power Quality,” Proceedings on Harmonics and Power Quality, Vol. 2, 1998, pp. 14-16.
 V. J. Gosbell, S. Perera and V. Smith, “Voltage Unbalance,” Technical Power Quality Center, University of Wollongong, Technical Note No. 6, 2002.
 C.-Y. Lee, “Effects of Unbalanced Voltage on the Operation Performance of a Three-Phase Induction Motor,” IEEE Transactions on Energy Conversion, Vol. 14, No. 2, 1999, pp. 202-208.
 A. I. Maswood, G. Joos, P. D. Ziogas and J. F. Lindsey, “Problems and Solutions Associated with the Operation of Phase-Controlled Rectifiers under Unbalanced Input Voltage Conditions,” IEEE Transactions on Industry Applications, Vol. 27, 1991, pp. 765-772.
 Benchmark Systems for Network Integration of Renewable Energy Resources, Version 7, CIGRE Task Force C6.04.02, 2011.
 E. Muljadi, C. P. Butterfield, T. Batan and D. Yildirim, “Understanding the Unbalanced Voltage Problems in Wind Turbine Generation,” National Renewable Energy Laboratory (NREL), 1999.
 J. Alonso-Martínez, J. Eloy-García and S. Arnaltes, “Control of a Three-Phase Grid Connected Inverter for Photovoltaic Applications with a Fuzzy MPPT under Unbalanced Conditions,” Proceedings on Power Electronics and Applications, 2009, pp. 1-7.
 L. Fan, Z. Miao, and A. Domijan, “Impact of unbalanced grid conditions on PV systems,” IEEE power and energy society general meeting, 2010, pp. 1-6.
 G. M. Bhutto, B. Bak-Jensen and P. Mahat, “Modeling of the CIGRE Low Voltage Test Distribution Network and the Development of Appropriate Controllers,” Transactions on Smart Grid and Clean Energy, Vol. 2, 2013, pp. 184-191.
 D. Das, “Electrical Power System,” New Age International (P) Publisher, New Delhi, 2006.
 Vector Group of Transformer, Electrical Notes & Articles.
 W. H. Kersting, “Distribution System Modeling and Analysis”, CRC Press, New Mexico, 2002.
 C. Hochgraf, R. H. Lasseter, “STATCOM Control for Operation with Unbalanced Voltages,” IEEE Transactions on Power Delivery, Vol. 13, 1998, pp. 538-544.
 Rekommandation 16, Spandingskvalitet I lavspandingsnet (voltage quality in low voltage Networks), 4. Udgave, 2011.