sarwodidoyo SE, Novizal N, Rahmawati K. Indirect Validity Test of Measurement Instrumentation in Flow Injection Synthesis Technique of Cu-Zn Ferrite Formation Process. IJSBAR. 2015;24(6):348-360. Accessed October 8, 2025. https://www.gssrr.org/JournalOfBasicAndApplied/article/view/4919