1. Íleri, A., Ünal, A. ECOS-95. In: Gögüs YA, Aksel A, Tsatsaronis G (editors). Ístanbul, Turkey: ASME, 1993:201.
2. Ünal, A. M.S. thesis, METU, Ankara, Turkey, 1994.
3. Available Energy Conversion and Utilization in the United States
4. Reistad, G.M. Thermodynamics: second law analysis. Gaggioli RA (editor). Chemical Engineering Symposium No. 122, 1980.
5. Exergy conversion in the Swedish society