Analysis of information sources in references of the Wikipedia article "Lingua portuguesa" in Galician language version.
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incorrecto: invalid character (Axuda). doi:10.1093/acprof:oso/9780199677108.003.0023.|isbn=
incorrecto: invalid character (Axuda). doi:10.1093/acprof:oso/9780199677108.003.0023.