Higgs radiation off quarks in supersymmetric theories at e^+e^-   colliders
  Yukawa couplings between Higgs bosons and quarks in supersymmetric theories can be measured in the processes e^+e^- -> Q Qbar + Higgs. We have determined the cross sections of these processes in the minimal supersymmetric model including the complete set of next-to-leading order QCD corrections for all channels. 
S. Dittmaier, M. Kr\"amer, Y. Liao, M. Spira and P.M. Zerwas