- The LUSAS Finite Element System and its Use in Civil Engineering,
S. Holsgrove, D.J. Irving, A.J. Kent and P. Lyons
Paper 17.1 from CCP: 4/5, ISBN 0-948749-03-2 (1987)
- The LUCAS Finite Element System with Reference to the Construction Industry,
D.J. Irving and L.P.R. Lyons
Paper 16.5 from CCP: 2/3, ISBN 0-948749-00-8 (1985)