Spectral analysis of early-type stars using a genetic algorithm based fitting method M. R. Mokiem, A. de Koter, J. Puls, A. Herrero, F. Najarro and M. R. Villamariz A&A, 441 2 (2005) 711-733 Published online: 19 September 2005 DOI: 10.1051/0004-6361:20053522