@article {johnson2011agent,
	title = {An agent-based approach to providing tourism planning support},
	journal = {Environment and Planning B: Planning and Design},
	volume = {38},
	number = {3},
	year = {2011},
	pages = {486{\textendash}504},
	publisher = {SAGE Publications Sage UK: London, England},
	author = {Johnson, Peter A and Sieber, Renee E}
}
