2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/55301This note gives a brief review of the integrable structures presented in the Seiberg-Witten approach to the N=2 SUSY gauge theories with emphasize on the case of the gauge theories with matter hypermultiplets included (described by spin chains). The web of different N=2 SUSY theories is discussed.LaTeX, 7 pages; contribution to the 31st Ahrenshoop Symposium, Buckow, Germany, 2-6 September 1997High Energy Physics - Theorytext