1. S.M.Sze. Physics of semiconductor devices, 2nd edition. John Wiley & Sons, 1981.
2. Energy transport numerical simulation of graded AlGaAs/GaAs heterojunction bipolar transistors. Azoff, E.M. pp.609-616, s.l. : IEEE Trans. ED, 1989, Vol. 36.
3. Close-form method for solving the steady-state generalised energy momentum conservation equations. Azoff, E.M. 25–30, s.l. : COMPEL, 1987, Vol. 6.
4. Smith, R. A. Semiconductors 2nd edn. Cambridge, England : Cambridge University Press, 1978.
5. D. Bednarczyk and J. Bednarczyk. 64A, 409, s.l. : Phys. Letters, 1978.