Rational Functions Invariant under a Finite Abelian Group. H.W. Jr. Lenstra (1974) Inventiones mathematicae
Representations in SU(2) of the fundamental groups of the Whitehead link and of doubled knots. Eric P. Klassen (1993) Forum mathematicum
Representations of group and semigroup actions Walter S. Sizer (1984) Czechoslovak Mathematical Journal
R-S correspondence for ( ℤ 2 × ℤ 2 ) ≀ S n and Klein-4 diagram algebras. Parvathi, M., Sivakumar, B. (2008) The Electronic Journal of Combinatorics [electronic only]