@article{gopageometricalopticspositioningalgorith,
  title = {GOPA: Geometrical Optics Positioning Algorithm Using Spatial Color Coded LEDs (Extended Version)},
  year = {2018},
  eprint = {1807.06931},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1807.06931v1},
}