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\bibitem{2591} Sergio Escalera, Jordi Gonzalez, Xavier Baro, Pablo Pardo, Junior Fabian, Marc Oliu, et al. (2015). ChaLearn Looking at People 2015 new competitions: Age Estimation and Cultural Event Recognition. In \textit{IEEE International Joint Conference on Neural Networks IJCNN2015} (pp. 1--8).

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