R. A. Zawawi, N. N. Khairulzaman, S. Shamsuddin, and N. Ibrahim, “Comparative Study on Structural, Electrical Transport and Magnetic Properties of Cr-Doped in Charge-Ordered Pr0.75Na0.25Mn1-Xcrxo3 and Nd0.75Na0.25Mn1-Ycryo3 Manganites”, IJET, vol. 7, no. 4.30, pp. 76–69, Nov. 2018, doi: 10.14419/ijet.v7i4.30.22016.