2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/47349Estimates for leading and non-leading `twist' distribution functions are obtained within the framework of a diquark spectator model using a non-local operator representation.LaTeX, 10 pages, 14 ps figures included with epsfig.sty. Proceedings of the DESY workshop, "Deep inelastic scattering off polarized targets: Theory meets experiment", DESY-Zeuthen, September 1-5, 1997High Energy Physics - Phenomenologytext