 | Hamburger, H. |
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 | Hamburger, H. (K. Wexler and H. Hamburger) -- On the Sufficiency of Surface Data for the Learning of Transformational Languages - 1973 |
| Hamburger, H. (H. Hamburger and K. Wexler) -- Identifiability of a Class of Transformational Grammars - 1973 |
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