  We calculate fusion rules for the admissible representations of the affine
superalgebra sl(2|1;C) at fractional level k=-1/2 in the Ramond sector. By
representing 3-point correlation functions involving a singular vector as the
action of differential operators on the sl(2|1;C) invariant 3-point function,
we obtain conditions on permitted quantum numbers involved. We find that in
this case the primary fields close under fusion.
