Darlington, Thomas K.; Wager-Smith, Karen; Ceriani, M. Fernanda; Staknis, David; Gekakis, Nicholas; Steeves, Thomas D. L.; Weitz, Charles J.; Takahashi, Joseph S. et al. (1998-06-05). "Closing the Circadian Loop: CLOCK-Induced Transcription of Its Own Inhibitors per and tim". Science280 (5369): 1599–1603. doi:10.1126/science.280.5369.1599. ISSN0036-8075. PMID9616122.
Saez, Lino; Young, Michael W (November 1996). "Regulation of Nuclear Entry of the Drosophila Clock Proteins Period and Timeless". Neuron17 (5): 911–920. doi:10.1016/S0896-6273(00)80222-6. PMID8938123.
Rutila, J. E.; Suri, V.; Le, M. (1998). "CYCLE Is a Second bHLH-PAS Clock Protein Essential for Circadian Rhythmicity and Transcription of Drosophila period and timeless". Cell93 (5): 805–814. doi:10.1016/S0092-8674(00)81441-5. PMID9630224.
Stanewsky, R.; Kaneko, M.; Emery, P.; Beretta, B.; Wager-Smith, K.; Kay, S. A.; Rosbash, M.; Hall, J. C.. "The cryb Mutation Identifies Cryptochrome as a Circadian Photoreceptor in Drosophila". Cell95 (5): 681–682. doi:10.1016/S0092-8674(00)81638-4. PMID9845370.
Darlington, Thomas K.; Wager-Smith, Karen; Ceriani, M. Fernanda; Staknis, David; Gekakis, Nicholas; Steeves, Thomas D. L.; Weitz, Charles J.; Takahashi, Joseph S. et al. (1998-06-05). "Closing the Circadian Loop: CLOCK-Induced Transcription of Its Own Inhibitors per and tim". Science280 (5369): 1599–1603. doi:10.1126/science.280.5369.1599. ISSN0036-8075. PMID9616122.
Saez, Lino; Young, Michael W (November 1996). "Regulation of Nuclear Entry of the Drosophila Clock Proteins Period and Timeless". Neuron17 (5): 911–920. doi:10.1016/S0896-6273(00)80222-6. PMID8938123.
Rutila, J. E.; Suri, V.; Le, M. (1998). "CYCLE Is a Second bHLH-PAS Clock Protein Essential for Circadian Rhythmicity and Transcription of Drosophila period and timeless". Cell93 (5): 805–814. doi:10.1016/S0092-8674(00)81441-5. PMID9630224.
Stanewsky, R.; Kaneko, M.; Emery, P.; Beretta, B.; Wager-Smith, K.; Kay, S. A.; Rosbash, M.; Hall, J. C.. "The cryb Mutation Identifies Cryptochrome as a Circadian Photoreceptor in Drosophila". Cell95 (5): 681–682. doi:10.1016/S0092-8674(00)81638-4. PMID9845370.
Darlington, Thomas K.; Wager-Smith, Karen; Ceriani, M. Fernanda; Staknis, David; Gekakis, Nicholas; Steeves, Thomas D. L.; Weitz, Charles J.; Takahashi, Joseph S. et al. (1998-06-05). "Closing the Circadian Loop: CLOCK-Induced Transcription of Its Own Inhibitors per and tim". Science280 (5369): 1599–1603. doi:10.1126/science.280.5369.1599. ISSN0036-8075. PMID9616122.