Alabi, I., A. Dare, and M. Petinrin. “Influence of Penetration Angles on Global-Thermo-Hydraulic-Performance of Shell and Tube Heat Exchangers With Multi-Cross Sectional Tube Configurations”. LAUTECH Journal of Engineering and Technology, Vol. 19, no. 1, Feb. 2025, pp. 15-26, https://laujet.com/index.php/laujet/article/view/754.