@article{alti:qpl05,
  title={{An Algebra of Pure Quantum Programming}},
  author={Thorsten Altenkirch and Jonathan Grattage and Juliana K. Vizzotto and  Amr Sabry },
  journal={Electronic Notes in Theoretical Computer Science},
  volume={170},
  pages={23--47},
  year={2007},
  publisher={Elsevier},
  note =	 {3rd International Workshop on Quantum Programming Languages},
}