Mishra, L.N. and Fredriksen, Å. . 2021. Measurement of Plasma Potential, Ion Saturation Current and Mach number using Retarding Field Energy Analyzer. Journal of Nepal Physical Society. 7, 2 (Aug. 2021), 76–80. DOI:https://doi.org/10.3126/jnphyssoc.v7i2.38626.