@phdthesis{Bourgeois2008i,
author = "Bourgeois, A.",
title = "Démographie, histoire familiale et systèmes de valeurs des grands-parents en France",
year = 2009,
url = "https://papyrus.bib.umontreal.ca/jspui/bitstream/1866/7717/1/Bourgeois_Anne_2009_memoire.pdf"
}