1. Surface friction and wear in the storage gravity flow and handling of bulk solids;Roberts,1984
2. Friction adhesion and wear in bulk materials handling;Roberts,1988
3. Concepts of boundary friction, adhesion and wear in bulk solids handling operations;Roberts;Bulk Solids Handling,1988
4. Surface friction, adhesion and wear characteristics in bulk solids handling equipment design and performance;Roberts,1986
5. Abrasive wear testing and analysis in bulk solids handling;Roberts,1986