Just after I posted this question, I looked at the full list of Feyncalc functions and found that named "Schouten". No idea how I could have missed it before, since I did search for it. Shame on me. I will see whether I can use it for my purposes...
Sorry for the premature query!
This archive was generated by hypermail 2b29 : 04/20/18-07:00:05 AM Z CEST