@inproceedings{olsson-eriksson-icpr-2008,
  author    = {Carl Olsson and
               Anders P. Eriksson},
  title     = {Solving quadratically constrained geometrical problems using
               lagrangian duality},
  booktitle = {International Conference on Pattern Recognition (ICPR)},
  year      = {2008},
  adress    = {Tampa, Florida}
}