@article{
  author = {Dehghan, S. M., Yazdian Varjani, A., Mohamadian, M.},
  title = {A New Method for Ripple Reduction of DC Voltage Using Active Filter},
  journal = {Nashriyyah -i Muhandisi -i Barq va Muhandisi -i Kampyutar -i Iran},
  year = {2007},
  volume = {5},
  number = {4},
  pages = {224-232},
  doi = {}
}