M. Zikky, M. J. Arifin, K. Fathoni, and A. Z. Arifin, “Performance Analysis of Specification Computer and Mobile with Implementation Tawaf Virtual Reality using A* Algorithm and RVO System”, EMITTER Int’l J. of Engin. Technol., vol. 7, no. 1, pp. 55-70, Jun. 2019.