[Qt-creator] Logo License ?

[Dorian]

Hello,

I would like add a nice logo in Qt Creator's Wikipedia page (i'm french) 
: http://fr.wikipedia.org/wiki/Qt_Creator

But in the russian version, the logo is under Copyright.... :( : 
http://ru.wikipedia.org/wiki/%D0%A4%D0%B0%D0%B9%D0%BB:QtCreator.png

So under what license is the logo ? (Why not under Creative Commons ? 
(By-Sa ?)

Thanks.

PS : Thanks too for this awesome software ;) .