* Michell, J. (1993). The origins of the representational theory of measurement: Helmholtz, Hölder, and Russell. ''Studies in History and Philosophy of Science'', 24, 185-206. | * Michell, J. (1993). The origins of the representational theory of measurement: Helmholtz, Hölder, and Russell. ''Studies in History and Philosophy of Science'', 24, 185-206. |