1. The use of stereovectors in structural and engineering geology;De Paor;Tectonophysics,1979
2. The theory of shear stress and shear strain on planes inclined to the principal directions;De Paor;J. Struct. Geol.,1990
3. Direction of shear;Fry;J. Struct. Geol.,1992
4. An improved method for determining the regional stress tensor using earthquake focal mechanism data;Gephart,1984
5. A simple construction for shear stress;Lisle;J. Struct. Geol.,1989