Hartung, V., Sarshar, M., Karle, V., Shammas, L., Rashid, A., Roullier, P., ... & Tallner, A. (2020). Validity of Consumer Activity Monitors and an Algorithm Using Smartphone Data for Measuring Steps during Different Activity Types. International Journal of Environmental Research and Public Health, 17(24), 9314. doi:10.3390/ijerph17249314

Karle, V., Hartung, V., Ivanovska, K., Mäurer, M., Flachenecker, P., Pfeifer, K., & Tallner, A. (2020). The Two-Minute Walk Test in Persons with Multiple Sclerosis: Correlations of Cadence with Free-Living Walking Do Not Support Ecological Validity. International Journal of Environmental Research and Public Health, 17(23), 9044. doi:10.3390/ijerph17239044