SIMBOLON, Aron; RODOTUA; GUNASTI; SAMUEL. Design and Experimental Analysis of a Simple Gamma-Type Stirling Engine Using Recycled Materials as an Energy Conversion Learning Media. International Journal of Energy Systems and Materials Innovation, [S. l.], v. 1, n. 3, p. 117–124, 2026. Disponível em: https://journal.gioedutech.id/index.php/IJESMI/article/view/38. Acesso em: 1 sep. 2026.