Use of wave phenomena in spatial elastic media for determination of angular motion solid body

In the considered well-known publications of the fundamental theory of wave gyroscopes with respect to a thin ring, cylinder, hemisphere, the effect of inertness of elastic waves has a one-dimensional character: the angular velocity of a body is a scalar characterising the rotation of an elastic solid body around an axis fixed in space. The generalisation of this effect to the spatial case is considered and investigated: an elastic spherically symmetric solid body with a free boundary, on which mass forces act.