6L.R. Jones and Fred Thompson, "Burden Sharing Among America and Its Allies: Tests of Collective Choice and Their Significance", Political Research Quartedy. September 1990, Volume 43. No. 3, p. 460.
7Tatsuro Yoda, "Japan' s Host Nation Support Program for the U. S. -Japan Security Alliance: Past and Prospects", Asian Survey. November/December 2006. Vol. XLVI. No. 6, pp. 937, 938.