1. reprint by Dover;Heaviside;Electromagnetic Theory,1899
2. T. Bromwich Proceedings of the London Mathematical Society 1916
3. Über eine Formel von Heaviside zur Berechnung von Einschaltvorgangen;Wagner;Archiv für Elektrotechnik,1916
4. On a general expansion theorem for the transient oscillations of a connected system;Carson;Physics Review,1917
5. A simple proof and extension of Heaviside's operational calculus for invariable systems;Van der Pol;Philosophical Magazine,1929