GSR and HRV: Its Application in Clinical Diagnosis. - Nutan D. Ahuja; Amit K. Agarwal; Ninad M. Mahajan; Naresh H. Mehta; Hatim N. Kapadia (CBMS, 2003)

Heart Rate Variability and its Clinical Application for Biofeedback. - Nutan D. Ahuja; V. Raghavan; Vikas Lath; Ashish Patil; Sreejit Pill (CBMS, 2004)