1. Almgren, R.F., ?An isotropic three-dimensional structure with Poisson's ratio = -1?, J. Elasticity, 15 (1985), 427?430.
2. Atrek, E. R., Gallagher, R.H., Ragsdell, K.M. and Zienkiewicz, O.C., (eds.), New Directions in Optimum Structural design, John Wiley and Sons, New York, 1984.
3. Barthelemy, B., Haftka, R.T., ?Accuracy analysis of the semi-analytical method for shape sensitivity analysis?, AIAA Paper 88-2284, Proc. AIAA/ASME/ASCE/ASC 29th Structures, Structural Dynamics and Materials Conference, Part 1, 1988, pp. 562?581, Also Mechanics of Structures and Machines, 18 (1990), 407?432.
4. Bendsøe, M.P., Optimization of Structural Topology, Shape, and Material. Springer-Verlag, Berlin, 1995.
5. Bendsøe, M.P., Díaz, A.R., Lipton, R. and Taylor, J.E. ?Optimal design of material properties and material distribution for multiple loading conditions, To appear in Int. J. Num. Meth. Engng.