Ruiz, Juan and Vilarrubia, Josep (2006): Canales de reciclaje internacional de los petrodólares. Published in: Banco de España, Documento Ocasional (Bank of Spain, Occasional Papers) No. 0605 (April 2006)
Ruiz, Juan and Vilarrubia, Josep (2006): International recycling of petrodollars. Published in: Banco de España, Documento Ocasional (Bank of Spain, Occasional Papers) No. 0605 (April 2006)
