en.wikipedia.org
en.wikipedia.org
courses.grainger.illinois.edu
savemyexams.com
sebokwiki.org
en.wikipedia.org
link.springer.com
link.springer.com
sciencedirect.com
sciencedirect.com
dl.acm.org
ACM Digital Library
https://dl.acm.org › doi › 10.1145 › 147508.147524
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