A new method for an objective, χ2-based spectroscopic analysis of early-type stars - First results from its application to single and binary B- and late O-type starsA. Irrgang, N. Przybilla, U. Heber, M. Böck, M. Hanke, M.-F. Nieva and K. ButlerA&A, 565 (2014) A63DOI: https://doi.org/10.1051/0004-6361/201323167