2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/52355We discuss two different nonlinear generalizations of the osp(2|2) supersymmetry which arise in superconformal mechanics and fermion-monopole models.10 pages, to be published in the Proceedings of the International Workshop "Supersymmetries and Quantum Symmetries" (SQS'03, 24-29 July, 2003), JINR Publishing, Dubna, Russia. V. 2: typos correctedHigh Energy Physics - Theorytext