L. Juma and J. Tsabora, “The South African Defence Review (2012) and Private Military / Security Companies (PMSCs): Heralding a Shift from Prohibition to Regulation?”, PER, vol. 16, no. 4, pp. 231–283, May 2017, doi: 10.17159/1727-3781/2013/v16i4a2415.