I see picture like this one on internet to have model to build.
Moderator: you wan't me to post the sources; i am standing the author's autorisation to post his picture so i partialy erase it; or please, accepte i delete it because it was no incorporated in my work.
Moderator: you wan't me to post the sources; i am standing the author's autorisation to post his picture so i partialy erase it; or please, accepte i delete it because it was no incorporated in my work.
sources used for this step:- : source
