References
- Zeller , R. C. and Pohl , R. O. 1971 . Phys. Rev. , : 2029
- Anderson , W. , Halperin , B. I. and Varma , C. M. 1972 . Phil. Mag. , 25 : 1
- Phillips , W. A. 1972 . J. Low Temp. Phys. , 7 : 351
- Zimmer (1987)Doctoral Theses
- Parrot , J. E. and Stuckes , A. D. 1975 . “Thermal conductivity of solids,” . London : Pion Limited .