A quasi-dislocation (a dislocation-like entity described here for the first time) moves at the speed of a Stoneley surface wave that travels at the interface between 2 different elastic solids. An Eshelby glide edge dislocation moves at the speed of a Scholte surface wave that travels at the interface between a solid and an ideal liquid. The quasi-dislocation and the glide edge dislocation (that moves at the Eshelby velocity) were the Green's functions of their waves. Scholte waves were planar distributions of transonic moving glide edge dislocations. They were not Stoneley waves, although often called by that name, because Stoneley waves were planar distributions of sub-sonic moving quasi-dislocations.

Quasi-Dislocation Stoneley Wave and Eshelby Dislocation Scholte Wave. J.Weertman: Physical Review Letters, 2004, 93[20], 205505 (3pp)