Salahudin, W. ., I. A. . Sasmita, A. B. . Harahap, and N. D. G. . Drantantiyas. “Crowd Heatmap Detection at Elephant Park During COVID-19 Using SSD Object Detection”. Jurnal Teknologi Riset Terapan, vol. 4, no. 1, Jan. 2026, pp. 15-32, doi:10.35912/jatra.v4i1.7215.