Dear Maha,

Herein some links to the requested papers:

http://research.ijcaonline.org/volume48/number6/pxc3880099.pdf

https://www.google.co.il/url?sa=t&rct=j&q=&esrc=s&source=web&cd=3&cad=rja&uact=8&ved=0ahUKEwijkMaklJnLAhVKDZoKHZECAZgQIAguMAI&url=http%3A%2F%2Fwebcache.googleusercontent.com%2Fsearch%3Fq%3Dcache%3ASMVsDpYoSLUJ%3Awww.iors.ir%2Fjournal%2Fbrowse.php%253Fa_id%253D66%2526slc_lang%253Dfa%2526sid%253D1%2526ftxt%253D1%2B%26cd%3D3%26hl%3Den%26ct%3Dclnk%26gl%3Dil&usg=AFQjCNFO9kpmpIg2UG0kmYBb9N44QYl5zQ&sig2=69Rsa2oYc5jMIHlsbrlG9A

http://www.ijcaonline.org/archives/volume48/number6/7353-0099

https://www.google.co.il/url?sa=t&rct=j&q=&esrc=s&source=web&cd=7&cad=rja&uact=8&ved=0ahUKEwijkMaklJnLAhVKDZoKHZECAZgQIAhLMAY&url=http%3A%2F%2Fwebcache.googleusercontent.com%2Fsearch%3Fq%3Dcache%3A7slPBPaHRkwJ%3Awww.tjfs-journal.org%2Ftjfs_v1n2_pp80_103.pdf%2B%26cd%3D7%26hl%3Den%26ct%3Dclnk%26gl%3Dil&usg=AFQjCNEiNimWJt-umOmOuIYiFnt4AQ_oEA&sig2=yXln6w6CQkNl3SgajC5E_w

https://www.google.co.il/url?sa=t&rct=j&q=&esrc=s&source=web&cd=10&cad=rja&uact=8&ved=0ahUKEwijkMaklJnLAhVKDZoKHZECAZgQIAhlMAk&url=http%3A%2F%2Fwebcache.googleusercontent.com%2Fsearch%3Fq%3Dcache%3ARCkI-j2znUYJ%3Awww.hindawi.com%2Fjournals%2Fjam%2F2013%2F795098%2F%2B%26cd%3D10%26hl%3Den%26ct%3Dclnk%26gl%3Dil&usg=AFQjCNGMtATiF5lrB7N7zAIbCbkcBuXZxg&sig2=X38JAcGoqUCaf6WhmkbiPg

Hoping this will be helpful,

Rafik

dear Rafik,, thank you very much