Ransing, R., Lewis, R. W., & Gethin, D. (2004). Using a deformable discrete-element technique to model the compaction behaviour of mixed ductile and brittle particulate systems. PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES, 362(1822), pp. 1867-1884. doi:10.1098/rsta.2004.1421

Ransing, Rajesh, Roland W. Lewis, and David Gethin. "Using a Deformable Discrete-element Technique to Model the Compaction Behaviour of Mixed Ductile and Brittle Particulate Systems." PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES 362, no. 1822 (2004): 1867-1884.

Ransing, Rajesh, Roland W. Lewis, and David Gethin. "Using a Deformable Discrete-element Technique to Model the Compaction Behaviour of Mixed Ductile and Brittle Particulate Systems." PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES 362.1822 (2004): 1867-1884.