Alexander, H.H, Beetstra, T, Bell, D, Cannan, S.J, Dee, E.G, Doyle, P, Fitzgerald, G, French, C, Jefferys, J.O, Kerridge, J.M, Pilgrim, W.R, Rabone, D, Ras, F.G, Reilly, M, Robinson, H.M, Stacey, G.M, Weatherhead, A, "An architecture and syntax for distributed databases", Computers and Standards, 1984