2024-11-142024-11-141993-01-121993-01-121993-01-121993-01-12https://gordailua.ueu.eus/handle/123456789/104application/pdfCopyright (c) 1993 Uztarohttps://creativecommons.org/licenses/by-nc-sa/4.0info:eu-repo/semantics/article