1. Allaire, J.J. Rstudio: Integrated development environment for r. In The R User Conference, useR!, page 14, Coventry, UK, 2011. University of Warwick.
2. Allen, F.E. The history of language processor technology in IBM. IBM Journal of Research and Development, 25(5):535–548, 1981.
3. Austrian, G. Herman Hollerith, forgotten giant of information processing. Columbia University Press, New York, USA, 1982.
4. Babbage, C. Passages from the Life of a Philosopher. Longman, Green, Longman, Roberts, and Green, London, UK, 1864.
5. Blass, A. and Gurevich, Y. Algorithms: A quest for absolute definitions. In Current Trends in Theoretical Computer Science: The Challenge of the New Century Vol 1: Algorithms and Complexity Vol 2: Formal Models and Semantics, pages 283–311. World Scientific, Singapur, 2004.