Magazine Staff (2022). New DU report examines the conflict in Yemen. University of Denver Magazine, Winter.

Kehl, Walter. 2008. “Biodiversity and Land Use in Central Asia.” Unpublished paper.

Chadwick, Richard W. 2006. “Korea 2020, National Security Futures, Development, Democracy, and Choices: Building a Korea Peace Structure.” Discussion paper. University of Hawaii, Honolulu, Hawaii.

Casetti, Emilio. 2003. “Power Shifts and Economic Development: When Will China Overtake the USA?" Journal of Peace Research 40 (6): 661−675.