@inbook{6903c1425c734db286106ec69d37d3fc,
title = "The social function of {"}smile{"} and {"}laughter{"}: variations across primate species and societies",
keywords = "Psychopharmacology, Econometric and Statistical Methods: General, Geneeskunde(GENK), Algemeen onderzoek",
author = "S. Preuschoft and {van Hooff}, J.A.R.A.M.",
year = "1997",
language = "Undefined/Unknown",
publisher = "Lawrence Erlbaum",
pages = "171--191",
editor = "U. Segerstr?le and P. Molnar",
booktitle = "Nonverbal Communication: Where Nature Meets Culture",
}