2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/96562The construction of flat currents, and hence conserved non-local charges, for the superstring on AdS_5 x S^5 is generalised. It is shown that such currents exist for sigma-model type actions on all coset (super-)spaces G/H in which, at the level of the Lie algebras, h is the grade-zero subspace of a Zm grading of g. This is true for an essentially unique choice of the Wess-Zumino term, which is determined.18 pages, LaTeX, extended discussion in section 2, references addedHigh Energy Physics - Theorytext