1. For shape-controlled materials produced by living organisms, see for example: S.Mann, Biomineralization: Principles and Concepts in Bioinorganic Materials Chemistry, Oxford University Press, Oxford, 2001
2. Handbook of Biomineralization: Biological Aspects and Structure Formation, E. Bäuerlein, ed., Wiley-VCH, Weinheim, 2007
3. S.Spring, in The Prokaryotes: A Handbook on the Biology of Bacteria, 3rd edn. M.Dworkin, S.Falkow, E.Rosenberg, K.-H.Schleifer and E.Stackebrandt, ed., Springer, New York, 2006, vol. 5, ch. 3.2.11
4. Characteristics of hollow microtubes consisting of amorphous iron oxide nanoparticles produced by iron oxidizing bacteria, Leptothrix ochracea
5. Supramolecular Nanotube Architectures Based on Amphiphilic Molecules