@article{khalil2018controllable,
  title = {Controllable switching between planar and helical flagellar swimming of a soft robotic sperm},
  journal = {PloS One},
  volume = {13},
  number = {11},
  pages = {e0206456},
  year = {2018},
  author = {Khalil, I. S. M. and Tabak, A. F. and Seif, M. A. and Klingner, A. and Sitti, M.}
}