1. Alexander S (1920) Space, time, and deity, vol II. Macmillan, London
2. Bechtel W (1994) Levels of descriptions and explanation in cognitive science. Mind Mach 4:1–25
3. Bechtel W (2008) Mental mechanisms. Philosophical perspectives on cognitive neuroscience. Routledge, London
4. Bickle J (1998) Psychoneural reduction: the new wave. MIT Press, Cambridge
5. Broad CD (1925) The mind and its place in nature. Routledge & Kegan Paul, London