P. Purwadi, I. Yusuf, I. Pattelongi, and A. Nurdin, “Physiological Stress Response in a Simulation Exercise of Demonstration Security ‘Research of Pulse Dynamics, ?-amylase Level, and Salivary Cortisol Level at Various Conditions of Working Climate and Methods of the Resting Phase’”, IJSBAR, vol. 24, no. 5, pp. 157–170, Nov. 2015.