Mammalian Cry1 and Cry2 are essential for maintenance of circadian rhythms

Authors: Gijsbertus T. J. van der Horst, Manja Muijtjens, Kumiko Kobayashi, Riya Takano, Shin-ichiro Kanno, Masashi Takao, Jan de Wit, Anton Verkerk, André P. M. Eker, Dik van Leenen, Ruud M. Buijs, D. Bootsma, Jan H.J. Hoeijmakers, Akira Yasui - Nature 1999 cited by 1,423