| 2008 | - | Is a holistic protolanguage a plausible precursor to language? A test case for a modern evolutionary linguistics - Smith | :: | 1 |
| Johansson, S. (2005). Origins of language: constraints on hypotheses. Amsterdam: John Benjamins.
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| 2008 | - | Primate social knowledge and the origins of language - Seyfarth,Cheney | :: | |
| Johansson S (2005) Origins of language: constraints on hypotheses. John Benjamins, Philadelphia
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| 2007 | - | Modelling linguistic taxonomic dynamics - Wichmann,Stauffer,Lima,Schulze | :: | 5 |
| Johansson, Sverker, 2005. Origins of Language: Constraints on Hypotheses . Amsterdam: Benjamins.
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