@article{feng_zhong_gan_2008, 
  title={Reactive Market Power Analysis Using Must-Run Indices}, 
  volume={23}, 
  DOI={10.1109/tpwrs.2008.919416}, 
  publisher={Institute of Electrical and Electronics Engineers (IEEE)}, 
  author={Feng and Zhong and Gan}, 
  year={2008}
  }