1. World Energy Efficiency Outlook, Chapter 7, “Will Motors Drive Electricity Savings?”, International Energy Agency (IEA), Paris, Fransa, (2016).
2. T.C. Bilim, Sanayi ve Teknoloji Bakanlığı Verimlilik Genel Müdürlüğü, Elektrik Motorlarında Enerji Verimliliği, Ankara, (2015).http://www.iaosb.org.tr/Media/FileDocument/ElektrikMotorlar_brosur.pdf
3. Report on Study on International Efficiency (IE) Efficiency Classes for Low Voltage AC Motors.
https://www.emsd.gov.hk/filemanager/en/content_764/Report%20on%20International%20Efficiency%20Efficiency%20Classes%20for%20Low%20Voltage%20AC%20Motors.pdf
4. T.C. Bilim, Sanayi ve Teknoloji Bakanlığı, Verimlilik Genel Müdürlüğü, “Elektrik Motorlarinda Enerji Verimliliği”, Ankara, (2015).
5. D.G. Dorrell, “The Challenges of Meeting IE4 Efficiency Standards for Induction and Other Machines,” in Proceedings of the International Conference on Industrial Technology (ICIT '2014), Busan (South Korea), 2014, pp. 213-218.