@article{Sallis2006,
author = {Sallis, J.F. and Cervero, R.B. and Ascher, W. and Henderson, K.A. and Kraft, M.K. and Kerr, J. },
title= {An ecological approach to creating active living communities},
year = {2006},
doi = {10.1146/annurev.publhealth.27.021405.102100},
journal = {Annual Review of Public Health },
volume = {27},
pages = {297--322},
}