Reference wanted: I was looking for a source for the integral form for the weak field metric in terms of the stress-energy tensor, as given in the wikipedia article on Linearised Gravity. The problem is that this article does not seem to have a reference for that formula, the references I have found on linearised gravity don't have it either. However, it is a very useful formula for someone who does not want to go through all the potential theory required to product it, with the associated risk of losing factors. Basically, I have a small stress-energy tensor with compact support in space, and I want to find the corresponding weak field $g_{ij}$ in a form where I can check all the conventions and reference the result. I would be very grateful for advice!