Quadratic lagrangians and massive gravitons

A free gravitational field Lagrangian (the first term of the decomposition), which reduces with a substitution of the field variables to the standard lagrangian sum, determining the massless and massive scalar and tensor fields has been obtained through the decomposition of the quadratic Lagrangian into series on the small additions to a plane metric. It has been shown, that the independent variation of the appropriate Lagrangian on the massive scalar and tensor gravitational field is possible only with some a certain ratio between coupling constants in the quadratic Lagrangian