Indrasari, W., A. S. Budi, and D. P. Fadilla. “The Development of Educational Aids for Restitution Coefficient Experiment Using Microcontroller”. Jurnal Penelitian & Pengembangan Pendidikan Fisika, Vol. 8, no. 1, June 2022, pp. 95 - 104, doi:10.21009/1.08109.