Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Yamada Sachi and Akashi Yukio and Abe Hiroshi and Takahashi Saeri,A survey on sleep time and depression of students in Fukui,Proceedings of Annual Conference of The Illuminating Engineering Institute of Japan,,The Illuminating Engineering Institute of Japan,2010,43,0,58-58,https://cir.nii.ac.jp/crid/1390282680529835520,https://doi.org/10.11515/ieijac.43.0.58.0