Michael Gordon

Wave speeds for an elastoplastic model for two-dimensional deformations with a nonassociative flow rule

Quarterly of Applied Mathematics, 57(2), 245–259.

An elastoplasticity model for antiplane shearing with a non-associative flow rule: Genuine nonlinearity of plastic waves

Journal of Mathematical Analysis and Applications, 219(2), 344–363.

Plane shear waves in a fully saturated granular medium with velocity and stress

International Journal of Non-Linear Mechanics, 32(1997), 489–503.