@misc{sturm2014apparatus,
  title={An apparatus and method for tracking and reconstructing three-dimensional objects},
  author={Sturm, J. and Cremers, D.},
  url={https://www.google.com/patents/EP2808842A3?cl=en},
  year={2014},
  month={Dec.},
  note={EP Patent App. EP20,130,190,218}
}