What`s up 
I`ve got an expierence with theese guys  
<a href="http://www5.geometry.net/authors/beilharz_johannes_page_no_3.html">http://www5.geometry.net/authors/beilharz_johannes_page_no_3.html</a> that were mentioned before. 
And I watned to translate thanks!

DanielRet