2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/45477We review algorithmic methods for two-loop calculations in HQET, and the analogous methods for on-shell QCD, needed for matching HQET to QCD.6 pages, LaTeX, 2 uuencoded PostScript figures appended (talk at AIHENP-95, Pisa)High Energy Physics - Phenomenologytext