All has begun at this page :
which references this post :
A very interesting discussion about the "new" possibilities of Voxel. Moreover, because I try to help on a game editor project, Voxel seems to be a good choice to create an easy-to-use terrain editor.
So i look forward and i search post at gamedev.net.
I have found these links :
A tutorial : http://www.flipcode.com/voxtut/
Coming from theses two posts :
An old projet of some guy : http://www.home.zonnet.nl/petervenis/
Now I have to read this and make some tests :)