Bibliographie

- The Principles of Quantum Mechanics, Paul Dirac.
- Paul Dirac and The Principles of Quantum Mechanics, Helge Kragh
Section "La fonction delta de Dirac"

- Définition
- Approximations
- Propriétés
- Notation utiles
Détail historique
Bibliographie

- Renormalization: An introduction to renormalization, the renormalization group and the operator product expansion, Collins.
- Dirac: A Scientific Biography, Helge Kragh