http://www.infpe.edu.dz/publication/_private/Gest_M_L.htm
http://akhattry.canalblog.com/archives/2006/07/11/index.html
http://membres.lycos.fr/myabdeslam/
http://www.ertu.org/nile_chan/NL_edu.asp#
http://www.ens-kouba.dz/Arabic/majaltakwin.htm