R A Housemann

Promoting physical activity in rural communities: walking trail access, use, and effects.

J F Sallis, R C Brownson, A. King, 2000, American journal of preventive medicine.

Differential correlates of physical activity in urban and rural adults of various socioeconomic backgrounds in the United States

R C Brownson, R. Brownson, R. Housemann, 2003, Journal of epidemiology and community health.