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Engkir Sukirman, Syahfandi Ahda & . Mardiyanto. Analysis of Crystal Structure the BaTiO\(_3\) and ZrO\(_2\)-Doped (Bi\({_0.}{_5}\)Na\({_0.}{_5}\) TiO\(_3\) With X-Ray Diffraction Techniques Using the Rietveld Method. NVST-V3 2021, 86-97.