@InProceedings{Sauerhoff_Woelfel_2003,
  author = 	 {Martin Sauerhoff and Philipp Woelfel},
  title = 	 {Time-Space Tradeoff Lower Bounds for Integer
                  Multiplication and Graphs of Arithmetic Functions},
  booktitle = 	 {Proceedings of the 35th Annual ACM Symposium
                  on Theory of Computing},
  pages =	 {186-195},
  year =	 2003
}