Neutral MSSM Higgs-boson production at e+e- colliders in the Feynman-diagrammatic approach S. Heinemeyer, W. Hollik, J. Rosiek and G. Weiglein Eur. Phys. J. C, 19 3 (2001) 535-546 Published online: 15 March 2001 DOI: 10.1007/s100520100631