Wahl, Russell: Russell in Transition 1914–1918: From Theory of Knowledge to “The Philosophy of Logical Atomism”, in: Elkind, Landon D. C. / Landini, Gregory (eds.): The Philosophy of Logical Atomism: A Centenary Reappraisal (History of Analytic Philosophy), Cham 2018 Palgrave Macmillan, pp. 133-152.