Insights for coastal destination development: the practices of kiteboarders in the Netherlands / Timo Derriks
A travessia : travessia de Portugal em Balão / Clube Português de Balonismo
The impact of cover desing and first questions on response rates for a mail survey of skydivers / James H. Frey
Portugal visto do céu : já arrancou a travessia de Portugal em balões de ar quente / Luís Manuel Cabral