1. Haber, L. F. (1958) The Chemical Industry during the Twentieth Century, Oxford; Morsel, H. (1970) Les Industries électro-techniques dans les Alpes françaises du Nord de 1869 à 1921. In: CNRS,L'Industrialisation en Europe au XIX siècle, Lyon, pp. 557–595; Beaud, M. (1975) Une Multinationale française: P. U.K., Paris.
2. Higher technical education and the engineering profession in France and Germany during the twentieth century;Alström;Econ. Hist.,1978
3. The making of mechanical engineers in France: the Ecoles d'arts et métiers 1803–1914;Uppsala Day;Fr. hist. Stud.,1978
4. Long-term change in the recruitment of the business elite: Germany compared to the US, Great Britain and France since the industrial revolution;Kaelble;J. soc. Hist.,1980
5. Lévy-Leboyer, M. (1979) Hierarchical structure and incentives in a large corporation: the early managerial experience of Saint-Gobain 1872–1912. In: Horn, N. & Kocka, J., eds, Recht und Entwicklung der Grossunternehmen im 19. und frühen 20. Jahrhundert, Göttingen, p. 465.