Bell, M. L., Ebisu, K., Peng, R. D., Walker, J., Samet, J. M., Zeger, S. L., & Dominici, F. (2008). Seasonal and Regional Short-term Effects of Fine Particles on Hospital Admissions in 202 US Counties, 1999–2005. Oxford University Press.

Bell, Michelle L., Keita Ebisu, Roger D. Peng, Jemma Walker, Jonathan M. Samet, Scott L. Zeger, και Francesca Dominici. Seasonal and Regional Short-term Effects of Fine Particles On Hospital Admissions in 202 US Counties, 1999–2005. Oxford University Press, 2008.

Bell, Michelle L., et al. Seasonal and Regional Short-term Effects of Fine Particles On Hospital Admissions in 202 US Counties, 1999–2005. Oxford University Press, 2008.