1. Mattheck, C.: Design and Growth Rule for Biological Structures and their Application in Engineering. In: Fatigue Fract Eng Mater Struct 13, 5, S. 535–550, 1990
2. MacNeal Schwendler Corporation: MSC/NASTRAN Design Sensitivity and Optimization, Version 68, 1994
3. Rasna Corporation: Structure and Thermal User's Guide, Release 7, 1994 / Parametric Technology Corporation: Pro/MECHANICA Design Study Reference, Release 17, 1996
4. Baumgartner, A., Harzheim, L. and Mattheck, C.: SKO (Soft Kill Option): The Biological Way to Find an Optimum Structure Topology. Int. J. Fatigue 14, 6 (1990), S. 387–393
5. Altair Computing OptiStruct User's Manual, Version 3.0, 1997