@misc{indiciaef37b9fdd51cd,
  title = {Simple Check Valves for Microfluidic Devices},
  author = {Willis, Peter A. and Greer, Harold F. and Smith, J. Anthony},
  year = {2010},
  url = {https://ntrs.nasa.gov/citations/20100019599},
  note = {Source identifier: 20100019599}
}