2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/46606The value of $α_s(m_Z)=0.106\pm 0.005$ is obtained in a scheme of sum rules for the leptonic constants of the vector $nS$-levels in the heavy $(\bar b b)$-quarkonium.5 pages, latexHigh Energy Physics - Phenomenologytext