1. The problem statement, all variables and given/known data I'm looking at solving a simple theory of massive gravity for Scwarzchild type solutions. I've attatched the paper that i'm working with. I've tried to add the 3 possible cubic terms to L_mass parametrized by constants. It doesn't seem possible to solve for B as a function of r only by giving the constants certain values, as is done in (3.6) in the paper. Am i missing something important?