Nordin, PhD, John S. “Toxic Gas Dispersion Models: Can They Predict Protective Action Distances in Case of a Chemical Spill?”. Journal of Emergency Management 6, no. 5 (September 1, 2008): 23–35. Accessed April 28, 2024. https://wmpllc.org/ojs/index.php/jem/article/view/1439.