Z. Abdullahi, A. D. A. Buba, M. Umar-Osuma, and A. Ramalan, “Enhancement of Electrical Conductivity of Graphene-Coated Glass Slides via Sulfuric Acid Chemical Passivation: A Systematic Study Using the Four-Point Probe Method”, NJP, vol. 34, no. 2, pp. 85–89, Jul. 2025, doi: 10.62292/10.62292/njp.v34i2.2025.383.