Ageing and outdoor mobility, by H. Mollenkopf, F. Marcellini, I. Ruoppila, M. Tacken; 2004
J. Knies
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J. Knies (2006). Ageing and outdoor mobility, by H. Mollenkopf, F. Marcellini, I. Ruoppila, M. Tacken; 2004. Gerontechnology, 5(4), 254-255
https://doi.org/10.4017/gt.2006.05.04.013.00