Speech and language processing. Jurafsky, D. & Martin, J. H Volume 3 , Pearson London, 2014.
bibtex   
@book{jurafsky_speech_2014,
	title = {Speech and language processing},
	volume = {3},
	publisher = {Pearson London},
	author = {Jurafsky, Dan and Martin, James H},
	year = {2014},
}

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