Phenomenological aspects of heterotic orbifold models at one loop P. Binétruy, A. Birkedal-Hansen, Y. Mambrini and B.D. Nelson Eur. Phys. J. C, 47 2 (2006) 481-505 Published online: 24 May 2006 DOI: 10.1140/epjc/s2006-02541-7