Che-Engku-Chik, C. E. N., N. A. Yusof, J. Abdullah, S. S. Othman, and H. Wasoh. “Characterization of COOH-Fe<sub>3</sub>O<sub>4</sub>/NCC-CTA<sup>+</sup> On Screen Printed Carbon Electrode Using Field Emission Scanning Electron Microscope and Energy Dispersive X-Ray for DNA Biosensor”. Journal of Biochemistry, Microbiology and Biotechnology, vol. 5, no. 2, Dec. 2017, pp. 19-21, doi:10.54987/jobimb.v5i2.343.