Just in case you do not have access, go to http://ieeexplore.ieee.org/Xplore/guesthome.jsp and do your search, if you find a paper you may want just post the title and I will bring it to you.

Even if the paper is somewhere else (other places than ieee) I may be able to help.

Take care.

Pls I need these articles

http://ieeexplore.ieee.org/iel4/98/7...&isnumber=7402
http://ieeexplore.ieee.org/Xplore/lo...isnumber=34047
http://ieeexplore.ieee.org/search/bk...metadata&pos=0