@unpublished{Disney2007,
author = {Richard Disney and Carl Emmerson and Gemma Tetlow},
title = {What is a public sector pension worth?},
year = {2007},
month = {Oct},
doi = {10.1920/wp.ifs.2007.0717},
issn = {1742-0415},
url = {http://www.ifs.org.uk/wps/wp1707.pdf},
}