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4. -Carlos Federico DomÍnguez Ávila,La independencia de Angola y la política internacional (1975-1976): un estudio basado en fuentes brasileñas, the journal of Estudios de Asia y Africa, Vol. 47, No. 3, ( Sept.- Dec., 2012).
5. -Christopher Stevens, The Soviet Union and Angola, the journal of African Affairs, Vol. 75, No. 299, (Apr., 1976).