Rakesh Bhattacharjee, email to the author, February 24, 2015.
127
Kim, «Blue Light from Electronics Disturbs Sleep, Especially for Teenagers.»
128
Olga E. Titova, Pleunie S. Hogenkamp, Josefin A. Jacobsson, Inna Feldman, Helgi B. Schioth, and Christian Benedict, «Associations of Self-Reported Sleep Disturbance and Duration with Academic Failure in Community-Dwelling Swedish Adolescents: Sleep and Academic Performance at School,» Sleep Medicine 16 (2015): 87–93.
