Obituary of Professor Sidney Greenbaum https://www.independent.co.uk/news/people/obituary-professor-sidney-greenbaum-1349972.html Ricardo Johnson (talk) 19:58, 18 February 2018 (UTC)

International Corpus of English http://ice-corpora.net/ice/ Ricardo Johnson (talk) 19:58, 18 February 2018 (UTC)

Software tools in Corpus Linguistics http://www.laurenceanthony.net/research/20130827_linguistic_research_paper/linguistic_research_paper_final.pdf Ricardo Johnson (talk) 20:01, 18 February 2018 (UTC)