Balbo , Gabriel Ryan Alfred. “Synthesis of Nano Calcium Carbonate from Egg Shell Wasteto Improve Paving Block Quality: A Literature Review and Bibliometric Analysis”. Scientica: Jurnal Ilmiah Sains dan Teknologi 1, no. 3 (December 22, 2023): 212–221. Accessed April 29, 2026. https://jurnal.kolibi.org/index.php/scientica/article/view/499.