1. W.M. Steen, K. Watkins, Laser Material Processing, 3rd edn. (Springer Verlag London Limited, Germany, 2003), p. 401
2. R. Iffländer, Solid-State Lasers for Materials Processing (Springer, Berlin, 2001), p. 347
3. J.F. Ready, Industrial Applications of Lasers (Academic Press, New York, 1997)
4. J.P. Holman, Heat Transfer, 9th edn. (McGraw-Hill, New York, 2002). (which in turn cites A.I. Brown, S.M. Marco, Introduction to Heat Transfer, 3rd edn., McGraw-Hill, New York, 1958 and E.R.G. Eckert, R.M. Drake, Heat and Mass Transfer, McGraw-Hill, New York, 1959)
5. A. Bejan, J.H. Boyett, A.D. Kraus, Heat Transfer Handbook (Wiley-IEEE, New Jersey, USA, 2003), p. 1496