1. Petela R (1964) Exergy of Heat Radiation. J. Heat Transfer 86, 187–192
2. Bošnjaković F, Knoche KF (1988) Technische Thermodynamik, Teil I. Steinkopff-Verlag, Darmstadt
3. de Vos A (1992) Endoreversible Thermodynamics of Solar Energy Conversion. Oxford University Press, Oxford
4. Ries H, Smestad G, Winston R (1991) Thermodynamics of Light Concentrators. SPIE Nonimaging Optics: Maximum Efficiency Light Transfer Vol. 1528, 7–14
5. Landsberg PT, Tonge G (1979) Thermodynamics of the Conversion of Diluted Blackbody Radiation. J. Phys. A. Math. Gen. 12