1. Walking, cycling, and obesity rates in Europe, North America, and Australia;Journal of Physical Activity and Health,2008
2. The value of time and external benefits in bicycle appraisal;Transportation Research A,2012
3. Cykelbanor och cykelfält i Stockholms innerstad [Bike lanes in Stockholm city],2002
4. Do the health benefits of cycling outweigh the risks?;Environmental Health Perspectives,2010