Fonseca, António M.2013-07-012013-07-012010FONSECA, António M. – Social Network: Comments. In BOVENBERG, Lans ; SOEST, Arthur Van; ZAIDI, Asghar (eds.) - Ageing, Health and Pensions in Europe: An Economic and Social Policy Perspective. London: Palgrave Macmillan, 2010. ISBN 978-0-230-28290-2. Cap. 6, p. 168-170http://hdl.handle.net/10400.14/11735engbook part