Simmi et al. 2025. Thermochemical Analysis of Urea and Citric Acid-Fuelled Solution Combustion for Zinc-Based Nano Oxide Synthesis. International Journal of Scientific Research in Science, Engineering and Technology. 12, 3 (Jun. 2025), 1315–1326. DOI:https://doi.org/10.32628/IJSRSET2512177.