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Pearce, P. (1980) Structure in Nature is a Strategy for Design, MIT Press.

Rothen, F. and Pieranski, P. (1996) Mechanical equilibrium of conformal crystals, Physical Review E., Vol. 53, 2828-2842.

Weaire, D. (1996) The Kelvin Problem: foam structures of minimal surface area, London: Taylor & Francis

Weaire, D. and Hutzler, S. The Physics of Foams, Oxford: Clarendon Press