Gulick, J. “A Critical Appraisal of Peter Gowan?S ?Contemporary Intra-Core Relations and World-Systems Theory?: A Capitalist World-Empire or U.S.-East Asian Geo-Economic Integration?”. Journal of World-Systems Research, vol. 10, no. 2, Aug. 2004, pp. 502-15, doi:10.5195/jwsr.2004.293.