@inproceedings{HimmelstossWimmer2003,
  author    = {Felix Himmelsto{\"s} and Eduard Wimmer},
  title     = {Simple DC-to-DC Converters with the Possibility of Bipolar Input Voltage},
  booktitle = {Proceedings of the European Power Electronics Conference (EPE 2003)},
  year      = {2003},
}