1. H. S. Carslaw and J. C. Jaeger, Conduction of heat solids (At the Clarendon Press, Oxford, 1959).
2. S. Suresh and A. Mortensen, Fundamentals of functionally graded materials (The University Press, Cambridge, 1988).
3. Cz. Woźniak and E. Wierzbicki, Averaging techniques in thermomechanics of composite solids. Tolerance averaging versus homogenization (Wydawnictwo Politechniki Częstochowskiej, Częstochowa, 2000).
4. Modelling and analysis of certain functionally graded heat conductors
5. Cz. Woźniak, B. Michalak and J. Jędrysiak, Thermomechanics of heterogeneous solids and structures. Tolerance Averaging Approach (Publishing House of Łódź University of Technology, Łódź, 2008).