F. Hermann, A. Schuller, S. Thiel, C. Knecht, and S. Scerri. Human-Computer Interaction. Users and Contexts of Use, volume 8006 of Lecture Notes in Computer Science, Springer Berlin Heidelberg, (2013)
ACI Committee 440. American Concrete Institute, American Concrete Institute
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U.S.A., (September 2007)ISBN 978-0-87031-259-5, 103 pp..