@article{anefficientapproximationalgorithmfor,
  title = {An Efficient Approximation Algorithm for Multi-criteria Indoor Route Planning Queries},
  author = {Chaluka Salgado and Muhammad Aamir Cheema and David Taniar},
  year = {2018},
  eprint = {1809.07614},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1809.07614v1},
}