  There are steady advances in the calculation of electroweak corrections to
massive scattering problems at colliders, from the very beginning in the
nineteen seventies until contemporary developments. Recent years brought a
remarkable progress due to new calculational technologies. This was motivated
by demands from phenomenological applications at particle accelerators: higher
multiplicities of the final states, extreme kinematics, need of higher
precision and thus of higher orders in perturbation theory. We describe
selected contributions from the project "Massive particle production" of
Sonderforschungsbereich/Transregio 9 of Deutsche Forschungsgemeinschaft.
