Tokizawa K, Uchida Y, Nagashima K (December 2009). "Thermoregulation in the cold changes depending on the time of day and feeding condition: physiological and anatomical analyses of involved circadian mechanisms". Neuroscience. 164 (3): 1377–86. doi:10.1016/j.neuroscience.2009.08.040. PMID19703527. S2CID207246725.
Abraham U, Albrecht U, Gwinner E, Brandstätter R (August 2002). "Spatial and temporal variation of passer Per2 gene expression in two distinct cell groups of the suprachiasmatic hypothalamus in the house sparrow (Passer domesticus)". The European Journal of Neuroscience. 16 (3): 429–36. doi:10.1046/j.1460-9568.2002.02102.x. PMID12193185. S2CID15282323.
Tokizawa K, Uchida Y, Nagashima K (December 2009). "Thermoregulation in the cold changes depending on the time of day and feeding condition: physiological and anatomical analyses of involved circadian mechanisms". Neuroscience. 164 (3): 1377–86. doi:10.1016/j.neuroscience.2009.08.040. PMID19703527. S2CID207246725.
Casini G, Petrini P, Foà A, Bagnoli P (1993). "Pattern of organization of primary visual pathways in the European lizard Podarcis sicula Rafinesque". Journal für Hirnforschung. 34 (3): 361–74. PMID7505790.
Abraham U, Albrecht U, Gwinner E, Brandstätter R (August 2002). "Spatial and temporal variation of passer Per2 gene expression in two distinct cell groups of the suprachiasmatic hypothalamus in the house sparrow (Passer domesticus)". The European Journal of Neuroscience. 16 (3): 429–36. doi:10.1046/j.1460-9568.2002.02102.x. PMID12193185. S2CID15282323.
Tokizawa K, Uchida Y, Nagashima K (December 2009). "Thermoregulation in the cold changes depending on the time of day and feeding condition: physiological and anatomical analyses of involved circadian mechanisms". Neuroscience. 164 (3): 1377–86. doi:10.1016/j.neuroscience.2009.08.040. PMID19703527. S2CID207246725.
Abraham U, Albrecht U, Gwinner E, Brandstätter R (August 2002). "Spatial and temporal variation of passer Per2 gene expression in two distinct cell groups of the suprachiasmatic hypothalamus in the house sparrow (Passer domesticus)". The European Journal of Neuroscience. 16 (3): 429–36. doi:10.1046/j.1460-9568.2002.02102.x. PMID12193185. S2CID15282323.