Zocht je misschien: elasticiteit, inkomen?
The determinants and income elasticities of direct and indirect sports expenditure categories
Erik Thibaut; John Eakins; Steven Vos (Lector); Jeroen Scheerder
Time and money expenditure in sports participation
Erik Thibaut; John Eakins; Steven Vos (Lector); Jeroen Scheerder