By Lichtwarck-Aschoff Anna   van Geert Paul   in European Journal of Developmental Psychology

ISSN:1740-5629|1|4|399-411

Routledge Ltd‎(2004)‎

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By Mares Suzanne H.W.   Lichtwarck-Aschoff Anna   Engels Rutger C.M.E.   in Psychology and Health

ISSN:0887-0446|28|7|833-848

Routledge Ltd‎(2013)‎

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