2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/33350This note describes an invariant of rational homology 3-spheres in terms of configuration space integrals which in some sense lies between the invariants of Axelrod and Singer and those of Kontsevich.39 pages, AMS-LaTeX, to appear in J. Diff. GeomDifferential GeometryHigh Energy Physics - TheoryQuantum Algebratext