M. Jane, Nebot, M., Rojano, X., Artazcoz, L., Sunyer, J., Fernández, E., Ceraso, M., Samet, J., and Hammond, S. K.,
“Exposure to environmental tobacco smoke in public places in Barcelona, Spain”,
Tobacco Control, vol. 11, no. 1, pp. 83 - 84, 2002.