{{Cite journal| doi = 10.2166/hydro.2019.017| issn = 1464-7141, 1465-1734| volume = 22| issue = 1| pages = 111–120| last1 = Braun| first1 = Mathias| last2 = Piller| first2 = Olivier| last3 = Deuerlein| first3 = Jochen| last4 = Mortazavi| first4 = Iraj| last5 = Iollo| first5 = Angelo| title = Uncertainty quantification of water age in water supply systems by use of spectral propagation| journal = Journal of Hydroinformatics| access-date = 2022-09-06| date = 2020-01-01| url = https://iwaponline.com/jh/article/22/1/111/67780/Uncertainty-quantification-of-water-age-in-water}}