@article{CTT100617611,
  author = {近藤亮太 and 赤木泰文},
  title = {電源高調波規制に対応した高圧モータドライブ用トランスレス・ハイブリッドフィルタ},
  journal = {電気学会産業応用部門誌},
  year = 2009,
}

@inproceedings{CTT100627864,
  author = {Hirofumi Akagi and ryota kondo},
  title = {A Transformerless Hybrid Active Filter Using a Three-Level Pulsewidth Modulation (PWM) Converter for a Medium-Voltage Motor Drive},
  booktitle = {IEEE Transactions on Power Electronics},
  year = 2010,
}