Chertkow, Howard, Victor Whitehead, Natalie Phillips, Christina Wolfson, Julie Atherton, and Howard Bergman. “Multilingualism (But Not Always Bilingualism) Delays the Onset of Alzheimer Disease: Evidence From a Bilingual Community.” Alzheimer Disease & Associated Disorders : An International Journal Vol. 24, no. 2 (April 2010): 118–125.