@article{li_2004, 
  title={Energetics of a Black Hole-Accretion Disk System with Magnetic Connection: Limit of Low Accretion Rate}, 
  volume={56}, 
  DOI={10.1093/pasj/56.4.685}, 
  publisher={Oxford University Press (OUP)}, 
  author={Li}, 
  year={2004}, 
  month={Aug}
  }