1. Arbor Software Corporation, “Multidimensional Analysis: Converting Corporate Data into Strategic Information”, UK, 1993.
2. Ashford, R.W. & R.C. Daniel, “LP-MODEL: XPRESS_LP’s Model Builder”, IMA Journal of Mathematics in Management, 1, pp 163–176, 1987.
3. Bisschop, J.J. & R. Entriken, AIMMS User Guide, Version 2. 03, Paragon Decision Technology, The Netherlands, 1993.
4. Bisschop, J.J. & R. Stegeman, “Linking Graphical Objects to Index Sets in an Algebraic Modelling Language” presented at APMOD95, Brunei University, Uxbridge, Middx, UK, April 1995.
5. Bradley, G.H. & D.R. Clemence, “A Type Calculus for Executable Modelling Languages”, IMA Journal of Math. in Management, 1, pp 227–291, 1987.