
<html><body><div style="color:#000; background-color:#fff; font-family:times new roman, new york, times, serif;font-size:16px"><pre class="" style="" id="yui_3_16_0_1_1426893879680_111335"><i class="" style="" id="yui_3_16_0_1_1426893879680_111375"><pre style="font-style: normal;" class="" id="yui_3_16_0_1_1426893879680_111374">Thank you sir for your help</pre><pre style="font-style: normal;" class="" id="yui_3_16_0_1_1426893879680_111374"><i class="" id="yui_3_16_0_1_1426893879680_111411"><pre style="font-style: normal;" class="" id="yui_3_16_0_1_1426893879680_111410">BOUTAIBA Farouk

Department of Physics

Faculty of Science

University of Science andTechnology of Oran

P.O.Box: 1505 El M'Naouer

31000 Oran

Algeria</pre></i></pre><pre style="font-style: normal;" class="" id="yui_3_16_0_1_1426893879680_111374"><i class=""><br></i></pre><pre style="font-style: normal;" class="" id="yui_3_16_0_1_1426893879680_111374"><br></pre></i></pre></div></body></html>