1. Agostini P, Petite G (1988) Photoelectric effect under strong irradiation. Contemp Phys 29(1):57–77
2. Agostini P, Petite G (1989) Shifts in atomic understanding. Phys World 2(9):47–52
3. Anonymous (1910) Proves the theory of electric ions
4. Prof. Milliken of University of Chicago declares that he has isolated an ion. Kinetic theory is upheld. Molecule of air shown to be in rapid motion and its energy of agitation measured. The New York Times, 25 May 1910, p 2
5. Auger P (1923) Sur les rayons β secondaires produits dans un gaz par des rayons X. C R Hebd Seances Acad Sci 177:169–171