1. G.E. Childs, L.J. Ericks and R.L. Powell, “Thermal Conductivity of Solids at Room Temperature and Below”, National Bureau of Standards Monograph 131, Washington (1973).
2. P.G. Klemens, Theory of Thermal Conductivity of Solids, in: “Thermal Conductivity” vol. 1, R.P. Tye, ed., Academic Press, London (1969).
3. P.G. Klemens, Thermal Conductivity of Solids at Low Temperatures, in: “Handbuch der Physik” vol. 14, S. Fluegge, ed., Springer, Berlin (1956).
4. G.K. White and R.J. Tainsh, Phys. Rev. Lett. 19: 165 (1967).
5. C. Herring, Phys. Rev. Lett. 19: 167 and 684 (1967).