@techreport{Feeney1996,
author = {Feeney, G.},
title= {A new interpretation of Brass' P/F ratio method applicable when fertility is declining},
year = {1996},
URL = {http://www.gfeeney.com/research-notes/2001.pfnote/pfnote.pdf
%[last accessed 8 January 2014},
}