Hello. 
I`ve got an expierence with theese guys https://www.forum.wearejames.com/viewtopic.php?p=142406
https://my.rsc.org/forums/viewtopic/39/10297?post_id=23952
http://demo.bbforum.be/post537.html
https://my.rsc.org/forums/viewtopic/13/10273?post_id=23922
http://forum.dydaktyka.fizyka.umk.pl/viewtopic.php?f=7&p=147195
  that were mentioned before. 
And I watned to claim thanks!

MichaelVig