2006, Jennifer M. Gurda and John S. Coleman, "Foreign accent syndrome: Best practice, theoretical issues and outstanding questions," Journal of Neurolinguistics, vol. 14, no. 5, p. 424,
The papers in this special issue have amply demonstrated the value of studying the foreign accent syndromes (with emphasis on their plurality)—in terms of both theoretical and practical (i.e. research and clinical) issues.