%0 Journal Article
%T Circadian rythms, mental efficiency and shift work
%J Ergonomics
%D 1970
%A Colquhoun, W. P.
%V 13
%N 5
%P 558-560
%X <p>[Abstract unavailable]</p> <p>Language: en</p>
%G en
%I Informa - Taylor and Francis Group
%@ 0014-0139
%U http://dx.doi.org/