Some articles on gumc:

Mathematics and The Phillips Curve - The Traditional Phillips Curve - The Price Phillips Curves
... Some assume that we can simply add in gUMC, the rate of growth of UMC, in order to represent the role of supply shocks (of the sort that plagued the U.S ... produces a standard short-term Phillips curve gP = −f(U − U*) + λ·gPex + gUMC ... low unemployment), supply-shock inflation (gUMC), and inflationary expectations or inertial inflation ...