Griew, P; Hillsdon, M; Foster, C; Coombes, E; Jones, A; Wilkinson, P; (2013) Developing and testing a street audit tool using Google Street View to measure environmental supportiveness for physical activity. The international journal of behavioral nutrition and physical activity, 10. ISSN 1479-5868 DOI: https://doi.org/10.1186/1479-5868-10-103