The issue addressed by Pride *et al.* (1992) concerns the
method by which one arrives at the equations of motion for sound traveling
through a solid/fluid mixture when it is assumed that the solid is porous,
but contains only a single type of mineral. The fluid is homogeneous and completely
fills the pores.

- The averaging theorem
- Dynamical equations
- Quasistatic constitutive relations for isotropic materials

11/12/1997