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Ayers, John W., Mark Dredze, Eric C. Leas, Theodore L. Caputi, Jon-Patrick Allem, et Joanna E. Cohen. "Next Generation Media Monitoring: Global Coverage of Electronic Nicotine Delivery Systems (electronic Cigarettes) On Bing, Google and Twitter, 2013-2018." PLoS One 2018.

Ayers, John W., et al. "Next Generation Media Monitoring: Global Coverage of Electronic Nicotine Delivery Systems (electronic Cigarettes) On Bing, Google and Twitter, 2013-2018." PLoS One 2018.