van Helten, Jean-Jacques (1981) Milner and the mind of imperialism. Collected Seminar Papers. Institute of Commonwealth Studies, 26 . pp. 42-57. ISSN 0076-0773

van Helten , Jean-Jacques (1979) British capital, the British state and economic investment in South African 1886-1914. Collected Seminar Papers. Institute of Commonwealth Studies, 24 . pp. 1-17. ISSN 0076-0773