Engkir Sukirman, Syahfandi Ahda, and . 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, pp. 86–97, Aug. 2021.