@article{Kaniewski:2014,
  author  = "J. Kaniewski and Z. Fedyczak and P. Szcześniak",
  title   = "Three-phase hybrid transformer using matrix-chopper as an interface between two AC voltage sources",
  journal = "Archives of Electrical Engineering",
  volume  = "Vol. 63",
  number  = "no. 2",
  pages   = "197--210",
  year    = "2014",
}