1. W.M. Steen, K. Watkins, Laser Material Processing, 3rd edn. (Springer Verlag London Limited, UK, 2003), p. 401
2. R. Iffländer, Solid-State Lasers for Materials Processing (Springer Verlag Berlin, 2001), p. 347
3. J.F. Ready, Industrial Applications of Lasers (Academic Press, New York City, 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, NJ, 2003), p. 1496