Yukawa couplings between Higgs bosons and quarks in supersymmetric theories
can be measured in the processes e(+) e(-) --> Q (Q) over bar + Higgs. We
have determined the cross sections of these processes in the minimal supers
ymmetric model including the complete set of next-to-leading order QCD corr
ections for all channels. (C) 2000 Published by Elsevier Science B.V. All r
ights reserved.