| 2004 | - | Secret Agents: Synthetic Approaches to Language Evolution - Thomforde | :: | |
| [10] B. de Boer. Emergence of vowel systems through self-organisation. AI Communications, 13(1):27--40, 2000.
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| 2002 | - | Evolving Sound Systems - de Boer | :: | 2 |
| de Boer, B. (2000) Emergence of vowel systems through self-organisation AI Communications 13 (2000) pp. 27-39
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