2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/140267The recent results of the CMD-2, SND, KLOE, and BABAR experiments on e+e- annihilation into hadrons at low energies are reviewed.14 pages, Presented at "XXIII International Symposium on Lepton and Photon Interactions at High Energy (LP07)", Daegu, Korea, August, 13-18, 2007, to appear in the proceedingsHigh Energy Physics - Experimenttext