Does an equivariant version of (Toen)-Riemann-Roch theorem hold say over a smooth Deligne-Mumford stack $X$ over the complex numbers?

Any references that state this explicitely?

Are there formulas for the equivariant Chern character and Todd genus? (as for the Chern character, I am content with the case of a coherent sheaf supported at a point and with $X$ of dimension $2$)