mercoledì 20 aprile 2016

# s-behav: two (multi?) step sleeper

A. Roger  Ekirch. Segmented  Sleep  in  Preindustrial  Societies. Sleep. Volume 39,  Issue  03. Letters To The Editor.

Bora Zivkovic. What is a `natural' sleep pattern? December 5, 2011

Richard A. Friedman. Sleep  DisorderWake  Up  and  Smell  the  Savanna. March  14,  2006

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