{{Cite journal| doi = 10.1016/j.ijheh.2018.05.004| issn = 1618-131X (Electronic) 1438-4639 (Linking)| volume = 221| issue = 6| pages = 951–957| last1 = Joost| first1 = S.| last2 = Haba-Rubio| first2 = J.| last3 = Himsl| first3 = R.| last4 = Vollenweider| first4 = P.| last5 = Preisig| first5 = M.| last6 = Waeber| first6 = G.| last7 = Marques-Vidal| first7 = P.| last8 = Heinzer| first8 = R.| last9 = Guessous| first9 = I.| title = Spatial clusters of daytime sleepiness and association with nighttime noise levels in a Swiss general population (GeoHypnoLaus)| journal = Int J Hyg Environ Health| date = 2018-06-05| pmid = 29861399}}