Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) ALEXANDER T. M. VAN DE WATER and ALISON HOLMES and DEIRDRE A. HURLEY,Objective measurements of sleep for non-laboratory settings as alternatives to polysomnography - a systematic review,Journal of Sleep Research,0962-1105,Wiley,2011-02-15,20,1pt2,183-200,https://cir.nii.ac.jp/crid/1363107369114713216,https://doi.org/10.1111/j.1365-2869.2009.00814.x