S. Upadhyay, A. Sharma, K. Nagpal, and S. Saini, “Effects of Gamma Radiation on the concentration of 5 Hydroxy L Tryptophan and 5 Hydroxytryptamine in presence of Radioprotector in Sprague Dawley Rats”, DSJ, vol. 47, no. 3, pp. 383-388, Jan. 2013.