M. T. Ismail, H. Dao, M. F. Zuhairi, and M. A. M. Ghazali, “Vertical Handover Evaluation for Heterogeneous Networks”, IJET, vol. 7, no. 4.29, pp. 148–151, Nov. 2018, doi: 10.14419/ijet.v7i4.29.21960.