Before using any effects files for my own purposes, I ask the originator for permission, of course the same consideration would be expected for any work that I had created.  Having said this, there is an effect that I am interested in incorporating into my design, with the file names as follows:

fx_flankerflame
fx_flankerburner

Have searched all over for the originator of these effects without success.  The creator of the file which I had come across these in initially, had borrowed the effects, and does not know where they obtained them  from.  If anyone recognizes these files and knows who I may get in contact with about them, please let me know.  Thanks -

The author of the effects is Rob Barendregt - do a search on his surname at Avsim and you'll see a list of his work. Any of them contain his email address.