1
D. Jurafsky and J. H. Martin, Speech and language processing: an introduction to natural language processing, computational linguistics, and speech recognition, Pearson Prentice Hall, Upper Saddle River, N.J., 2nd ed., 2009, vol. Prentice Hall series in artificial intelligence.
2
N. A. Smith, Linguistic structure prediction, Morgan & Claypool, San Rafael, Calif, 2011, vol. Synthesis lectures on human language technologies.
3
M. Collins, in Proceedings of the ACL-02 conference on Empirical methods in natural language processing  - EMNLP ’02, Association for Computational Linguistics, 2002, pp. 1–8.
4
Stat NLP Book, https://github.com/uclmr/stat-nlp-book.