1. Sauer P, Overbye T, Gross G (2001) Reactive power support services in electricity markets. Power System Eng Res Center (PSERC) Report
2. Alvarado F (2003) Reactive power as an identifiable ancillary service. Alberta Report
3. Zhong J (2003) On some aspects of design of electric power ancillary service market. Thesis for Ph.D. degree, Sweden
4. Niknam T, Arabian H, Mirjafari M (2004) Reactive power pricing in deregulated environments using novel search methods. IEEE proceeding of third international conference on machine learning and Cybemetics, Shanghai 26–29, pp 4234–4240
5. Zhao Y, Irving MR, Song Y (2005) A cost allocation and pricing method for reactive power services in the new deregulated electricity market environment. IEEE transmission and distribution conference, Asia and Pacific, Dalian, China, pp 1–6