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Fu, Marcela, Jose M. Martínez-Sánchez, Ramon Clèries, Joan R. Villalbí, Richard A. Daynard, Gregory N. Connolly, και Esteve Fernández. "Opposite Trends in the Consumption of Manufactured and Roll-your-own Cigarettes in Spain (1991–2020)." BMJ Open 2014.

Fu, Marcela, et al. "Opposite Trends in the Consumption of Manufactured and Roll-your-own Cigarettes in Spain (1991–2020)." BMJ Open 2014.