Arya, P., G. S P, A. Gupta, and R. Batra. “Correct Information Unit (CIU) As a Measure of Communicative Informativeness and Efficiency in Persons With Aphasia”. Journal of All India Institute of Speech and Hearing, Vol. 30, no. 1, Dec. 2011, pp. 130-7, http://203.129.241.91/jaiish/index.php/aiish/article/view/1363.