2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/45927A few topics on the expansion in heavy quark mass are discussed. The theoretical framework is the Wilson Operator Product Expansion rather than the Heavy Quark Effective Theory.9 pages, LaTex, no figures. To appear in the Proceedings of European Physical Society Conference on High Energy Physics, Brussels, July 1995High Energy Physics - Phenomenologytext