1. R.M. German, Powder Metallurgy Science, Metal Powder Industries Federation, New Jersey, 1997, pp. 274–282.
2. A. Martin-Meizoso, M. Tellaeche Repáraz, J. Gil Sevillano, Revista de Metalurgia 34 (1998) 314.
3. M.F. Ashby, D.R.H. Jones, Engineering Materials 1, Butterworth-Heinemann, Cambridge, 1980, pp. 165–171.
4. J. Crank, The Mathematics of Diffusion, Clarendon Press, Uxbridge, 1975, pp. 141–144.