Conversion/zero-derivation: 2000-2025 Valera Hernández, Salvador 2025-09-19T11:52:49Z 2025-09-19T11:52:49Z 2025 conference output https://hdl.handle.net/10481/106492 eng http://creativecommons.org/licenses/by-nc-nd/4.0/ open access Attribution-NonCommercial-NoDerivatives 4.0 Internacional