@inbook{676d40537a544c6e9ca14d0eabd60306,
title = "Severity of depression in relation to motor activity and self-reported sleep characteristics",
author = "Volkers, {AC (A.)} and Joke Tulen and {van den Broek}, W.W. and Jan Bruijn and Jan Passchier and Pepplinkhuizen, {L (Lolke)}",
year = "2000",
language = "Undefined/Unknown",
isbn = "9073675111",
pages = "140--144",
editor = "{van Bemmel}, A.L. and D.G.M. Beersma and H. Folgering and W.F. Hofman and G.S.F. Ruigt",
booktitle = "Sleep-wake research in The Netherlands, volume 11",
}