1. Surface frictional 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;Int. J. Bulk Solids Handling,1988
4. Prediction of lining wear life on bins and chutes in bulk solids handling operations;Roberts;Tribol. Int.,1993