@article{congruencesandconcurrentlinesinmulti,
  title = {Congruences and Concurrent Lines in Multi-View Geometry},
  author = {Jean Ponce and Bernd Sturmfels and Matthew Trager},
  year = {2016},
  eprint = {1608.05924},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1608.05924v2},
}