“Comparative study of Devnagari script on porous and non-porous surfaces using unconventional writing instruments”. iJournals:International Journal of Social Relevance & Concern ISSN:2347-9698 13, no. 6 (जून 6, 2025). अंतिम उपयोग अक्टूबर 22, 2026. https://ijournals.in/journal/index.php/ijsrc/article/view/355.