Jalut, L., 		Suharta, W., & 		Windaryoto, W.
(2021).
 Effect of Variation Substitution of Nd and Eu on the Crystal Structure of Y-124 Superconductor (Y1-x-yNdxEuyBa2Cu4O8??).
<em>BULETIN FISIKA, 23</em>(2), 113-120.
doi:10.24843/BF.2022.v23.i02.p06