1. The renormalization group and the ε expansion
2. D.U. Jungnickel, C. Wetterich, in: The Exact Renormalization Group, Eds. Kraznitz et al. (World Sci, Singapore, 1999) p.41, hep-ph/9902316.
3. T.R. Morris, in: The Exact Renormalization Group, Eds. Kraznitz et al. (World Sci, Singapore, 1999) p.1, hep-th/9810104 (this is updated to conform to present notation).
4. Elements of the Continuous Renormalization Group
5. T.R. Morris, in: New Developments in Quantum Field Theory, NATO ASI series 366 (Plenum, New York, 1998), hep-th/9709100.