@article{Kaniewski:2019,
  author  = "J. Kaniewski",
  title   = "Power flow controller based on bipolar direct PWM AC/AC converter operation with active load",
  journal = "Archives of Electrical Engineering",
  volume  = "Vol. 68",
  number  = "iss. 2",
  pages   = "341--356",
  year    = "2019",
}