Pais, Sofia Oliveira2011-07-202011-07-202002PAIS, Sofia Oliveira - De facto relationships and same-sex relationships in Portugal. In The International Survey of Family Law. United Kingdom: Family Law, 2002. ISBN 9780853087670. p. 337-346http://hdl.handle.net/10400.14/4808engDe facto relationships and same-sex relationships in Portugalbook part