J. Jufrizal, Z. H. Siregar, T. J. Saktisahdan, B. K. Putra, and M. N. R. Syahputra, “Performance Test of Stirling Engine LPG Gas Burner with Variation of Airflow Rate”, IRA J.Tek. Mesin Dan Apl, vol. 1, no. 2, pp. 5–10, Sep. 2022.