Yusuf Abdulmalik, & Sani Aliyu. (2019). Optimization of Passive Flat Plate Solar Thermal Collector. International Journal of Advances in Scientific Research and Engineering (IJASRE), ISSN:2454-8006, DOI: 10.31695/IJASRE, 5(4), 118–124. https://doi.org/10.31695/IJASRE.2019.33152