1.		Travel advice or trade embargo? : the impacts and implications of official travel advice / Richard Sharpley, Julia Sharpley, John Adams Autor: Sharpley, Richard Coautor: ; Sharpley, Julia Adams, John
2.		Travel advice - security or politics? / Richard Sharpley, Julia Sharpley Autor: Sharpley, Richard Coautor: ; Sharpley, Julia