Rao, B.L.N., B. Roy, H. Mathur, U. Gupta, Jai Prakash, and P. Verma. 2014. “Propagation of V.H.F. Radio Waves in Mountainous Terrains-Polarisation Effects”. Defence Science Journal 13 (4), 249-56. https://doi.org/10.14429/dsj.13.7108.