Lyons, John
Natural language and universal grammar
Cambridge University Press, 1991
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Greenbaum, Sidney
A students grammar of the English language
Longman , 1990
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Parrot, Martin
Grammar for English language teachers
Cambridge University Press, 2003
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Krulee, Gilbert K.
Computer processing of natural language
Prentice-Hall, 1991
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Keegel, John C.
The language of computer programming in English
Regents Publishing, 1976
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