@misc{indiciaeb214153608ac,
  title = {Regulated dc-to-dc converter for voltage step-up or step-down with input-output isolation.},
  author = {Feng, S. Y. M. and Wilson, T. G. and Dakermandji, G. and Lee, F. C. Y.},
  year = {1971},
  url = {https://ntrs.nasa.gov/citations/19720030822},
  note = {Source identifier: 19720030822}
}