McMinn, David, Nicolas M. Oreskovic, Matt J. Aitkenhead, Derek W. Johnston, Shemane Murtagh, and David A. Rowe. 2014. “The Physical Environment and Health-Enhancing Activity During the School Commute: Global Positioning System, Geographical Information Systems and Accelerometry”. Geospatial Health 8 (2):569-72. https://doi.org/10.4081/gh.2014.46.