Sidheswarprasad Panigrahi. “Speech and Voice Characteristics of Cleft Palate Subjects With and Without Prosthesis”. Journal of All India Institute of Speech and Hearing, Vol. 24 & 25, no. 1, 1, pp. 123-4, http://203.129.241.91/jaiish/index.php/aiish/article/view/1107.