Raihan, M., & Astuti, E. T. (2026). THERMAL EFFICIENCY ANALYSIS OF COFFEE BEAN ROASTER BASED ON PARABOLIC DISH COLLECTOR (PDC) WITH THE ADDITION OF FRESNEL GLASS AS A SOLAR RADIATION AMPLIFIER . TOPLAMA, 3(2), 110–125. https://doi.org/10.61397/tla.v3i2.500