B. R. Adhikari, S. Basnet, H. P. Lamichhane, and R. Khanal, “BEAT FREQUENCY AND VELOCITY VARIATION OF IONS IN A MAGNETIZED PLASMA SHEATH FOR DIFFERENT OBLIQUENESS OF THE MAGNETIC FIELD”, J. Inst. Sci. Tech., vol. 23, no. 1, pp. 88–92, Jan. 2019.