@article{Fedyczak:2012,
  author  = "Z. Fedyczak and P. Szcześniak",
  title   = "Matrix-reactance frequency converters using an low frequency transfer matrix modulation method",
  journal = "Electric Power Systems Research",
  volume  = "Vol. 83",
  number  = "no 1",
  pages   = "91--103",
  year    = "2012",
}