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Lindgren, A. and Ross, S., The Modernist World, Routledge, 2015, p. 495; Mavrakis, N., "The Hurufiyah Art Movement in Middle Eastern Art," McGill Journal of Middle Eastern Studies Blog, Online: https://mjmes.wordpress.com/2013/03/08/article-5/; Tuohy, A. and Masters, C., A-Z Great Modern Artists, Hachette UK, 2015, p. 56
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