REFERENCES
- Borisenkov MF, Perminova EV, Kosova AL. (2010). Chronotype, sleep length, and school achievement of 11- to 23-year-old students in northern European Russia. Chronobiol. Int. 27:1259–1270.
- Borisenkov MF, Kosova AL, Kasyanova ON. (2012). Impact of perinatal photoperiod on the chronotype of 11- to 18-year-olds in northern European Russia. Chronobiol. Int. 29:305–310.
- Portaluppi F, Smolensky MH, Touitou Y. (2010). Ethics and methods for biological rhythm research on animals and human beings. Chronobiol. Int. 27:1911–1929.
- Roenneberg T, Wirz-Justice A, Merrow M. (2003). Life between clocks: daily temporal patterns of human chronotypes. J. Biol. Rhythms 18:80–90.
- Vollmer C, Michel U, Randler C. (2012). Outdoor light at night (LAN) is correlated with eveningness in adolescents. Chronobiol. Int. 29:502–508.