Portegijs, E., Keskinen, K. E., Eronen, J., Saajanaho, M., Rantakokko, M., & Rantanen, T. (2020). Older Adults' Physical Activity and the Relevance of Distances to Neighborhood Destinations and Barriers to Outdoor Mobility. Front Public Health.

Portegijs, Erja, Kirsi E. Keskinen, Johanna Eronen, Milla Saajanaho, Merja Rantakokko, und Taina Rantanen. "Older Adults' Physical Activity and the Relevance of Distances to Neighborhood Destinations and Barriers to Outdoor Mobility." Front Public Health 2020.

Portegijs, Erja, et al. "Older Adults' Physical Activity and the Relevance of Distances to Neighborhood Destinations and Barriers to Outdoor Mobility." Front Public Health 2020.