1. C. Kittel, Introduction to solid state physics, 4th edition, [1971] [Wiley &, Sons].
2. A. Sommerfeld, H. Bethe, Handbuch der Physik bd. 24, 2 Springer Verlag [1933] p. 333.
3. A. Matthiessen, Ann.Phys.Chem. 110, 190 [1860].
4. A. Matthiessen, C. Voigt, Ann.Phys.Chem. 122, 19 [1864]
5. J. Bass, Advances in Physics 21, nr. 91, 431–604 [1972]