Kunsheng Fang Supak, S., Luo, H., Tateosian, L., Fang, K., Harrell, J., Harrelson, C., … Devine, H. (2012). Who's Watching Your Food? A Flexible Framework for Public Health Monitoring1. Transactions in GIS, 16(2), 89–104. https://doi.org/10.1111/j.1467-9671.2012.01309.x Floyd, M. F., Bocarro, J. N., Smith, W. R., Baran, P. K., Moore, R. C., Cosco, N. G., … Fang, K. (2011). Park-Based Physical Activity Among Children and Adolescents. American Journal of Preventive Medicine, 41(3), 258–265. https://doi.org/10.1016/j.amepre.2011.04.013