

@article {12886,
	title = {The sanitation ladder, what constitutes an improved form of sanitation?},
	journal = {Environmental Science and Technology},
	volume = {49},
	number = {2},
	year = {2015},
	pages = {1086{\textendash}1094},
	author = {Exley, Josephine LR and Liseka, Bernard and Cumming, Oliver and Ensink, Jeroen H J}
}
