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Ortells, R., Egozcue, J. J., Ortego, M. I. and Garola, A. (2016) Relationship between the popularity of key words in the Google browser and the evolution of worldwide financial indices. In: Martín-Fernández, Josep Antoni and Thió-Henestrosa, Santiago, (eds.) Compositional Data Analysis. Springer Proceedings in Mathematics & Statistics (187). Springer International (Firm), Cham, Switzerland, pp. 145-165. ISBN 9783319448107