Community Tip - Learn all about the Community Ranking System, a fun gamification element of the PTC Community. X
Now Knovel with a big collection of Mathcad-sheets is a part of Elsevier.
See please
http://www.elsevier.com/about/press-releases/corporate/elsevier-acquires-knovel,-provider-of-web-based-productivity-application-for-the-engineering-community
