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Modelos cosmológicos de Friedmann con producción de radiación gravitacional

2023
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Barreras y determinantes al turismo internacional: aproximación mediante un modelo gravitacional

2021
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Relações externas da União Europeia com o Magrebe : aplicação de um modelo gravitacional

2001
The possibility of eastern countries becoming members of the European Union, is the ground for the redefinition of communitary policy towards third Mediterranean countries and will surely shape future relations between the two banks of the Mediterranean.
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