A Helical Magnetic Torsion Spring for an Ocean Observation Buoy Wave Energy Converter. Proceedings of the European Wave and Tidal Energy Conference, [S. l.], v. 16, 2025. DOI: 10.36688/ewtec-2025-723. Disponível em: https://submissions.ewtec.org/proc-ewtec/article/view/723. Acesso em: 10 sep. 2025.