S. A. Razali, N. Ibrahim, S. Shamsuddin, and M. Z. Noh, “Observation of Charge Ordering Signal in Monovalent Doped Nd0.75Na0.25-xKxMn1O3 (0 ≤ x ≤ 0.10) Manganites”, IJET, vol. 7, no. 4.30, pp. 85–88, Nov. 2018, doi: 10.14419/ijet.v7i4.30.22021.