@article {drakopoulos1994hierarchical,
	title = {Hierarchical choice in economics},
	journal = {Journal of Economic Surveys},
	volume = {8},
	number = {2},
	year = {1994},
	pages = {133{\textendash}153},
	publisher = {Blackwell Publishing Ltd Oxford, UK},
	author = {Drakopoulos, Stavros A}
}
