N. Kamal, M. H. Md Saad, C. S. Kok, and A. Hussain, “Towards Revolutionizing Stem Education Via IoT and Blockchain Technology”, IJET, vol. 7, no. 4.11, pp. 189–192, Oct. 2018, doi: 10.14419/ijet.v7i4.11.20800.