1. S.A. Samtech, BOSS/Quattro Users Guide, Version 3.1, 1999.
2. S.A. Samtech, SAMCEF User Manuals, Version 8-0-06, 1999.
3. J.R. Vinson, R.L. Sierakowsky, The Behaviour of Structures Composed of Composite Materials, Kluwer Academic Publishers, Dordrecht, 1990. ISBN 90-247-3578-5.
4. Structural synthesis by combining approximation concepts and dual methods;Schmidt;AIAA J.,1980
5. Structural optimisation: a new dual method using mixed variables;Fleury;Int. J. Num. Meth. Eng.,1986