Tumlos, R.B., Arciaga, M.E., Ulano, A.M., Lee, H.V. and Yanson, I.T. 2006. Optimization studies of a 2.45 GHz microwave argon plasma with varying distances between two repelling hexapoles. Proceedings of the Samahang Pisika ng Pilipinas, 24(1), SPP-2006-2A-04. URL: https://proceedings.spp-online.org/article/view/SPP-2006-2A-04.