  In this paper fundamental Wigner coefficients are determined algebraically by
considering the eigenvalues of certain generalized Casimir invariants. Here
this method is applied in the context of both type 1 and type 2 unitary
representations of the Lie superalgebra gl(mjn). Extensions to the non-unitary
case are investigated. A symmetry relation between two classes of Wigner
coefficients is given in terms of a ratio of dimensions.
