Z. Fernando, J. Singh, and A. Anand. Proceedings of the 42nd International ACM SIGIR Conference on Research and Development in Information Retrieval, page 1005--1008. (2019)
F. Simion, E. Valenza, and C. Umiltà. The Development of Sensory, Motor and Cognitive Capacities in Early Infancy: From Perception to Cognition, Psychology Press, East Sussex, UK, (1998)