Sommer, R., Till, M., Boyer, L., Weber, P., Sauter, A., Ferschl, S., Herrmann-Johns, A., Abu-Omar, K., Pfeifer, K., Gelius, P. (2025). The challenge of participatory projects for physical activity promotion: What to scale and how to scale?. PLoS ONE. https://doi.org/10.1371/journal.pone.0326737