@inbook{Castiglioni2004,
author = {Castiglioni, M.},
title= {First sexual intercourse and contraceptive use in Italy},
year = {2004},
editor = {Dalla Zuanna, G.},
editor = {Crisafulli, C.},
booktitle = {Sexual behaviour of Italian students},
address = {Messina},
publisher = {Dipartimento Statistico, Università di Messina},
pages = {19--39},
}