@article{Keenan2015a,
author = "Katherine Keenan, Else Foverskov and Emily Grundy",
title = "Data sources on the older population in Europe: comparison of the generations and gender survey (GGS) and the survey of health, ageing and retirement in Europe (SHARE)",
year = 2015,
journal = "Population",
url = "http://eprints.lse.ac.uk/64440/"
}