1. R. Albert and A.-L. BarabŽasi. 2002. Statistical mechanics of complex networks. Reviews of Modern Physics 74, 47-97.

2. Bart de Boer. 2000. Self-organisation in Vowel Systems. Journal of Phonetics, 28(4), 441-465.

3. P. Boersma. 1998. Functional Phonology. (Doctoral thesis, University of Amsterdam), The Hague: Holland Academic Graphics.

4. R. Ferrer i Cancho and R. V. SolŽe. 2001. Santa Fe working paper 01-03-016.

5. N. Chomsky and M. Halle. 1968. The Sound Pattern of English, New York: Harper and Row.

6. M. Choudhury, A. Mukherjee, A. Basu, and N. Ganguly. 2006. Analysis and Synthesis of the Distribution of Consonants over Languages: A Complex Network Approach. Proceedings of COLING-ACL, Sydney, Australia.

7. N. Clements. 2004. Features and Sound Inventories. Symposium on Phonological Theory: Representations and Architecture, CUNY.

8. G. W. Flake, S. R. Lawrence, C. L. Giles, and F. M. Coetzee. 2002. Self-organization and Identification of Web communities. IEEE Computer, 35, 66-71.

9. E. Flemming. 2005. Deriving Natural Classes in Phonology. Lingua, 115(3), 287-309.

10. A.W. de Groot. 1931. Phonologie und Phonetik als Funktionswissenschaften. Travaux du Cercle Linguistique de, Prague 4, 116-147.

11. F. Hinskens and J. Weijer. 2003. Patterns of Segmental Modification in Consonant Inventories: A Cross-linguistic Study. Linguistics, 41, 6.

12. P. Holme, M. Huss, and H. Jeong. 2003. Subnetwork Hierarchies of Biochemical Pathways. Bioinformatics 19, 532-538.

13. B. W. Kernighan and S. Lin. 1970. An Efficient Heuristic Procedure for Partitioning Graphs. Bell System Technical Journal, 49, 291-307.

14. P. Ladefoged and I. Maddieson. 1996. Sounds of the Worlds Languages, Oxford: Blackwell.

15. B. Lindblom and I. Maddieson. 1988. Phonetic Universals in Consonant Systems. In L.M. Hyman and C.N. Li, eds., Language, Speech, and Mind, Routledge, London, 62-78.

16. I. Maddieson. 1984. Patterns of Sounds, Cambridge University Press, Cambridge.

17. A. Martinet 1955. `Economie des Changements PhonŽetiques, Berne: A. Francke.

18. M. E. J. Newman. 2003. The Structure and Function of Complex Networks. SIAM Review 45, 167-256.

19. M. E. J. Newman and M. Girvan. 2004. Finding and Evaluating Community Structure in Networks. Phys. Rev. E 69, 026113.

20. V. Pericliev and R. E. ValdŽes-PŽerez. 2002. Differentiating 451 Languages in Terms of their Segment Inventories. Studia Linguistica, 56(1), 1-27.

21. A. Pothen, H. Simon, and K.-P. Liou. 1990. Partitioning Sparse Matrices With Eigenvectors of Graphs. SIAM J. Matrix Anal. Appl., 11, 430-452.

22. F. Radicchi, C. Castellano, F. Cecconi, V. Loreto, and D. Parisi. 2003. Defining and Identifying Communities in Networks. PNAS, 101(9), 2658-2663.

23. J. Scott. 2000. Social Network Analysis: A Handbook, Sage, London, 2nd edition.

24. C. E. Shannon and W. Weaver. 1949. The Mathematical Theory of Information, Urbana: University of Illinois Press.

25. N. Trubetzkoy. 1930. Die Phonologische Systeme. TCLP, 4, 96-116.

26. M. S. Vitevitch. 2005. Phonological neighbors in a small world: What can graph theory tell us about word learning? Spring 2005 Talk Series on Networks and Complex Systems, Indiana University, Bloomington.

27. S. Yook, H. Jeong and A.-L. BarabŽasi. 2001b. preprint.