Quartic Equations and Algorithms for Riemann Tensor Classification. - Jan E. Åman; R. A. d'Inverno; G. C. Joly; Malcolm A. H. MacCallum (EUROSAM, 1984)

Progress on the Equivalence Problem. - Jan E. Åman; R. A. d'Inverno; G. C. Joly; Malcolm A. H. MacCallum (European Conference on Computer Algebra (2), 1985)

Applications in CoSIDE. - Russel L. Winder; G. C. Joly; A. H. Kamalati (OOPSLA Addendum, 1992)