Optimizing the Sustainable Human Development Index (HDI) through Calligraphy and Qori’ Training for Students at the Muhammadiyah Orphanage in Madiun City. (2026). Journal of Contemporary Research and Innovation, 1(1), 1-18. https://jurnal.al-fathsiak.org/index.php/jcri/article/view/1 (Original work published 2026)