Nussbaumer-Streit B, Greenblatt A, Kaminski-Hartenthaler A, Van Noord MG, Forneris CA, Morgan LC, Gaynes BN, Wipplinger J, Lux LJ, Winkler D, Gartlehner G. Melatonin and agomelatine for preventing seasonal affective disorder: a Cochrane Review. BJPsych Adv. 2020 Jul;26(4):192. doi: 10.1192/bja.2020.26
Wardman M, Chintakayala PK, de Jong G. Values of travel time in Europe: review and meta-analysis. Transp Res Part A Policy Pract. 2016 Dec;94:93-111. doi: 10.1016/j.tra.2016.08.019