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		Luh Gede, P., 		Ratini, N., & 		Iffah, M.
(2020).
 Effect of X-ray Tube Voltage Variation on Signal to Noise Ratio (SNR) by Application of Anode Heel Effect using Stepwedge.
<em>BULETIN FISIKA, 22</em>(1), 20-28.
doi:10.24843/BF.2021.v22.i01.p04