@unpublished{F2005,
author = {Thomas F Crossley and Yuqian Lu},
title = {Exploring the returns to scale in food preparation (baking penny buns at home)},
year = {2005},
month = {Jan},
volume = {pp.},
doi = {10.1920/wp.ifs.2005.0503},
issn = {1742-0415},
url = {http://www.ifs.org.uk/wps/wp0503.pdf},
}