2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/49398We present a phenomenological analysis of production and decays of stops, sbottoms, and staus in e+e- collisions with sqrt(s) = 500 - 800 GeV. We include SUSY-QCD and Yukawa coupling corrections as well as initial state radiation. We show that e- beam polarization is a powerful tool for a determination of the underlying SUSY parameters. Using in addition a polarized e+ beam improves the precision of the parameter determination by about 25%.6 pages; to appear in the Proceedings of the International Workshop on Linear Colliders, Sitges, Spain, April 28 - May 5, 1999High Energy Physics - Phenomenologytext