1. Bader, R.F.W.: Atoms in Molecules: A Quantum Theory. Oxford Science Publishers, Oxford (1990)
2. Bader, R.F.W.: Principle of stationary action and the definition of a proper open system. Phys. Rev. 49(19), 348–356 (1994)
3. Bader, R.F.W.: The Lagrangian approach to chemistry. In: The Quantum Theory of Atoms in Molecules, Chap. 2, pp. 37–59. Wiley-VCH, New York (2007)
4. Bader, R.F.W.: Bond paths are not chemical bonds. J. Phys. Chem. 113, 10391–10396 (2009)
5. Bader, R.F.W.: Definition of molecular structure: by choice or by appeal to observation? J. Phys. Chem. A 114, 7431–7444 (2010)