SIGGEN - Natural Language Generation
http://www.aclweb.org/siggen/

SIGPARSE - Natural Language Parsing
http://parlevink.cs.utwente.nl/sigparse/

SIGSEM - Computational Semantics
http://www.sigsem.org/

Computation and Language E-Print Archive
http://xxx.lanl.gov/cmp-lg

Computational Linguistics, di Igor A. Bolshakov and Alexander Gelbukh
http://www.gelbukh.com/clbook/

Natural Language Processing
http://www.aaai.org/AITopics/html/natlang.html

NLP Tutorials
http://www.scism.sbu.ac.uk/inmandw/tutorials/nlp/index.html

Natural Language Processing FAQ
http://www.faqs.org/faqs/natural-lang-processing-faq/