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Brainard, G.C., Vaughan, M.K. & Reiter, R.J. The influence of artificial and natural short photoperiods on male syrian hamsters: Reproductive effects. Int J Biometeorol 28, 317–325 (1984). https://doi.org/10.1007/BF02188559
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DOI: https://doi.org/10.1007/BF02188559