Kubota, J., Waku, T. Veröffentlicht in Japan Journal of Physical Education, Health and Sport Sciences (2023) “...state...”
Funahashi, H., Mano, Y. Veröffentlicht in Japan Journal of Physical Education, Health and Sport Sciences (2014) “... later (T3: February 2013). In each survey, the respondents were asked to state their willingness to pay...”