(1) https://www.ncbi.nlm.nih.gov/pubmed/20030543

(2) https://www.ncbi.nlm.nih.gov/pubmed/22850476

(3) http://onlinelibrary.wiley.com/doi/10.1111/j.1600-079X.2006.00332.x/full

(4) http://press.endocrine.org/doi/full/10.1210/jc.2004-2062

(5) https://www.ncbi.nlm.nih.gov/pubmed/20030543

(6) http://www.newsweek.com/blue-blocking-glasses-may-help-treat-bipolar-disorder-promote-sleep-484065

(7) http://onlinelibrary.wiley.com/doi/10.1111/bdi.12390/abstract

(8) https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3047226/

(9) https://www.ncbi.nlm.nih.gov/pubmed/19493002

(10) https://www.newscientist.com/article/dn21127-skin-sees-the-light-to-protect-against-sunshine/

(11) http://onlinelibrary.wiley.com/doi/10.1111/bdi.12390/abstract

(12) http://jn.nutrition.org/content/133/4/992.long

(13) http://www.newhope.com/high-energy-blue-light-exposure-protection-all-ages-white-paper

(14) https://www.ncbi.nlm.nih.gov/m/pubmed/27562504/

(15) https://www.ncbi.nlm.nih.gov/pubmed/7769534

(16) https://www.ncbi.nlm.nih.gov/pubmed/18922088

(17) https://www.ncbi.nlm.nih.gov/pubmed/19837048

(18) https://www.ncbi.nlm.nih.gov/pubmed/21116053

(19) https://www.ncbi.nlm.nih.gov/pubmed/15978279 

(20) https://www.ncbi.nlm.nih.gov/pubmed/9554572/

(21) http://www.newsweek.com/blue-blocking-glasses-may-help-treat-bipolar-disorder-promote-sleep-484065

(22) https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3200463/

(23) https://www.ncbi.nlm.nih.gov/pubmed/23856285

(24) http://press.endocrine.org/doi/pdf/10.1210/jc.2015-1859

(25) https://www.ncbi.nlm.nih.gov/pubmed/24909301  

(26) https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4734149/

(27) https://www.ncbi.nlm.nih.gov/pubmed/21415172

(28) https://www.ncbi.nlm.nih.gov/pubmed/21164152

(29) https://www.ncbi.nlm.nih.gov/pubmed/15582288

(30) https://www.ncbi.nlm.nih.gov/pubmed/15325001

(31) http://onlinelibrary.wiley.com/doi/10.1111/jsr.12050/full

(32) http://www.ncbi.nlm.nih.gov/pubmed/23691095

(33) http://bmjopen.bmj.com/content/5/1/e006748

(34) https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3047226/

(35) http://behavioralandbrainfunctions.biomedcentral.com/articles/10.1186/1744-9081-2-15

(36) https://www.ncbi.nlm.nih.gov/pubmed/16179266

(37) https://www.ncbi.nlm.nih.gov/pubmed/16364209

(38) https://www.ncbi.nlm.nih.gov/pubmed/24909301

(39) https://www.ncbi.nlm.nih.gov/pubmed/15978279