@article {hennig2013find,
	title = {How to find an appropriate clustering for mixed-type variables with application to socio-economic stratification},
	journal = {Journal of the Royal Statistical Society: Series C (Applied Statistics)},
	volume = {62},
	number = {3},
	year = {2013},
	pages = {309{\textendash}369},
	publisher = {Wiley Online Library},
	author = {Hennig, Christian and Liao, Tim F}
}
