Stenzel, Reiner, Johannes Grünwald, Codrina Ionita, Roman Schrittwieser, and Manuel Urrutia. “Sheaths and Double Layers With Instabilities”. The Journal of Technological and Space Plasmas 2, no. 1 (March 24, 2021): 70-92. Accessed September 19, 2021. https://jtsp.eu/jtsp/article/view/16.