Canad. J. Math. 55(2003), 247
Printed: Apr 2003
This note signals an error in the above paper by giving a counter-example.
37J15 - Symmetries, invariants, invariant manifolds, momentum maps, reduction [See also 53D20]
58A40 - Differential spaces
58D19 - Group actions and symmetry properties
70H33 - Symmetries and conservation laws, reverse symmetries, invariant manifolds and their bifurcations, reduction