1. P. Hirsch: Microcolony formation and consortia. In: Microbial Adhesion and Aggregation, ed. by K.C. Marshall (Springer, Berlin, Heidelberg 1984) pp. 373–393
2. C. Friend-Norton: Microbiology (Addison-Wesley, Boston 1981)
3. M.H. Saier Jr: Bacterial diversity and the evolution of differentiation, Austr. Soc. Microbiol. News 66(6), 337–343 (2000)
4. J. Casadesús, D. Low: Epigenetic gene regulation in the bacterial world, Microbiol. Mol. Biol. Rev. 70(3), 830–856 (2006)
5. R.F. Xavier, N. Omar, L. Nunes de Castro: Bacterial colony: Information processing and computational behavior, 3rd World Congr. Nat. Biol. Inspired Comput. (2011) pp. 439–443