Wernette, D. & Lerner, K. An analysis of Chemical Stockpile Emergency Preparedness Program exercise results. Volume 2: Preliminary evaluation and analysis of CSEPP exercise database, report, June 1, 1998; (https://digital.library.unt.edu/ark:/67531/metadc706224/m1/1/: accessed October 21, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .