Swimming patterns of a polarly flagellated bacterium in environments of increasing complexityM. Raatz, M. Hintsche, M. Bahrs, M. Theves and C. BetaEur. Phys. J. Special Topics, 224 7 (2015) 1185-1198DOI: https://doi.org/10.1140/epjst/e2015-02454-3