The publication by Microsoft is clearly a valid reference for the Wikipida.  Defacto, it amounts to an official statement of their views.  As  such it does not require verification by any 3rd party (who would you use?).  Kliz seems to be using any excuse that he can find to try to censor the views of Microsoft.  The Wikipedia should not be a party to this suppression.  Wikipedia readers deserve to have the full coverage of the published literature.
Likewise, the official views of IBM, Sun, Google, FSF, etc. should be reported in the same fashion.63.164.47.227