Hello. This is more a Mathematica question really, but here it goes anyway. As a consequence of some calculations on high energy physics, I need to integrate an expression that involves a Levi-Civita tensor contracted with four FourVectors (I'm using the FeynCalc package). I'm guessing the solution has something to do with doing the replacement Eps->Signature. The problem is I can only see the LC tensor as Eps when I use //StandardForm, but when I do so, the whole expression is inclosed in a Form Box so that I can't use it in subsequent calculations. Any suggestions on how to do this? Thanks for your time.