Jw. Barrett et Bw. Westbury, THE EQUALITY OF 3-MANIFOLD INVARIANTS, Mathematical proceedings of the Cambridge Philosophical Society, 118, 1995, pp. 503-510
The invariants of S-manifolds defined by Kuperberg for involutory Hopf
algebras and those defined by the authors for spherical Hopf algebras
, are the same for Hopf algebras on which they are both defined.