A tryptophan-rich breakfast and exposure to light with low color temperature at night improve sleep and salivary melatonin level in Japanese students

WADA, Kai et al. A tryptophan-rich breakfast and exposure to light with low color temperature at night improve sleep and salivary melatonin level in Japanese students. In Journal of circadian-rhythms. - Springer, 2013, 2013, roč. 11, č. 4, s. [1-9].