In the period 1911 to 1930, as physical understanding of the behaviour of electrons in metals increased, various different theoretical expressions (based on different physical assumptions) were put forwards for AG, by Richardson, Saul Dushman, Ralph H. Fowler, Arnold Sommerfeld and Lothar Wolfgang Nordheim.
Saul Bellow | Saul | Saul Steinberg | Saul Williams | Saul Bass | Saul Tigh | Saúl Lisazo | Saul Kripke | Saul Kent | Saul (Handel) | Saul Wahl | Saul Rubinek | Saul Kassin | Saul, Gloucestershire | Saul Alinsky | Saul Winstein | Saul Teukolsky | Saul Stokes | Saul Dushman | Saul Dibb | Saul David | Saúl Álvarez | Rich Saul | Richard Saul Wurman | Jonathan Saul Kane | John Saul | Victor Saul Navasky | Saul Sternberg | Saul Rae | Saul of the Mole Men |