Gunanto, Y.E., Manawan, M. , Izaak, M.P. , Sitompul, H. , Yunasfi, Y. and Adi, W.A. 2024. Structural and Magnetic Properties of Barium-Strontium-Hexaferrite Material Ba0.6Sr0.4Fe10-xCoxMnTiO19 (x = 0.5; 1.0; and 1.5) as Microwave Absorbers. Journal of Mathematical and Fundamental Sciences. 55, 3 (May 2024), 208-221. DOI:https://doi.org/10.5614/j.math.fund.sci.2024.55.3.1.