1. A Dynamical Theory of the Electromagnetic Field;Maxwell;Phil. Tran.,1865
2. Electric Waves;Hertz,1962
3. Heinrich Hertz and the Development of Physics
4. NASA website, https://www.jpl.nasa.gov/news/news.php?feature=7372, April 10, 2019.
5. Visualizing superposition process and appreciating the principle of non-interaction of waves;Ambroselli,2011