@misc{kuijpers2016formal,
  title={A Formal Algebra for OLAP},
  author={Bart Kuijpers and Alejandro Vaisman},
  year={2016},
  eprint={1609.05020},
  archivePrefix={arXiv},
  primaryClass={cs.DB},
  url={https://arxiv.org/abs/1609.05020}
}