. A. S. Golam, Ahmad Muneer El-Deen Faik, and Hayder Mohammad Jaffal, “Assessment of Heat Transfer and Friction Characteristics in Circular Pipe Utilizing Balls as Tabulators”, J. eng. sustain. dev., vol. 29, no. 1, pp. 96–104, Jan. 2025, doi: 10.31272/jeasd.2496.