This article refers to:
Article title: Estimating walking access levels incorporating distance thresholds of built environment features
Authors: Tayebeh Saghapour, Sara Moridpour, and Russell G. Thompson
Journal: International Journal of Sustainable Transportation
Bibliometrics: Volume 13, Number 01, pages 1–14
DOI: 10.1080/15568318.2017.1380245
When the article was originally published online, the following reference was excluded:
Saghapour, T., Moridpour, S. and Thompson, R. G. (2017). Measuring Walking Accessibility in Metropolitan Areas. Transportation Research Record, Journal of the Transportation Research Board, 2661, 111–119. doi:10.3141/2661-13
Now, the above reference has been included and the article has republished online.